

 
The Military Commissions Act of 2009 
(MCA 2009): Overview and Legal Issues 
Jennifer K. Elsea 
Legislative Attorney 
March 7, 2014 
Congressional Research Service 
7-5700 
www.crs.gov 
R41163 
 
The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Summary 
On November 13, 2001, President Bush issued a Military Order (M.O.) pertaining to the 
detention, treatment, and trial of certain non-citizens in the war against terrorism. Military 
commissions pursuant to the M.O. began in November 2004 against four persons declared 
eligible for trial, but the Supreme Court in Hamdan v. Rumsfeld invalidated the military 
commissions as improper under the Uniform Code of Military Justice (UCMJ). To permit military 
commissions to go forward, Congress approved the Military Commissions Act of 2006 (MCA), 
conferring authority to promulgate rules that depart from the strictures of the UCMJ and possibly 
U.S. international obligations. Military commissions proceedings were reinstated and resulted in 
three convictions under the Bush Administration. 
Upon taking office in 2009, President Obama temporarily halted military commissions to review 
their procedures as well as the detention program at Guantánamo Bay in general, pledging to 
close the prison facilities there by January 2010, a deadline that passed unmet. One case was 
moved to a federal district court. 
In May 2009, the Obama Administration announced that it was considering restarting the military 
commission system with some changes to the procedural rules. Congress enacted the Military 
Commissions Act of 2009 (MCA 2009) as part of the Department of Defense Authorization Act 
(NDAA) for FY2010, P.L. 111-84, to provide some reforms the Administration supported and to 
make other amendments to the Military Commissions Act, as described in this report. The plan to 
transfer five “high value detainees” to New York for trial in federal court, announced in 
November 2009, was halted due to resistance from Congress and some New York officials. 
Military commissions resumed under the new statute, resulting in an additional five convictions, 
although two of the previous convictions have been reversed on appeal. The government has been 
granted a rehearing en banc at the U.S. Court of Appeals for the D.C. Circuit for one case. 
This report provides a background and analysis comparing military commissions as envisioned 
under the revised MCA to those established by the MCA 2006. After reviewing the history of the 
implementation of military commissions in the armed conflict against Al Qaeda and associated 
forces, the report provides an overview of the procedural safeguards provided in the MCA. 
Finally, the report provides two charts comparing the MCA as amended by the MCA 2009 to the 
original MCA enacted in 2006 and to general courts-martial. The first chart describes the 
composition and powers of the military tribunals, as well as their jurisdiction. The second chart, 
which compares procedural safeguards in courts-martial to the MCA as enacted and as amended, 
follows the same order and format used in CRS Report RL31262, Selected Procedural 
Safeguards in Federal, Military, and International Courts, as well as CRS Report R40932, 
Comparison of Rights in Military Commission Trials and Trials in Federal Criminal Court, both 
by Jennifer K. Elsea, to facilitate comparison with safeguards provided in federal court and 
international criminal tribunals. 
 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Contents 
Introduction ...................................................................................................................................... 1 
Military Commissions ..................................................................................................................... 6 
Jurisdiction ................................................................................................................................ 8 
Jurisdiction over the Offender ............................................................................................. 8 
Subject Matter Jurisdiction ................................................................................................ 11 
Temporal and Spatial Jurisdiction ..................................................................................... 16 
Composition and Powers ......................................................................................................... 17 
Procedures Accorded the Accused ........................................................................................... 20 
Open Hearing .................................................................................................................... 20 
Right to Be Present ............................................................................................................ 22 
Right to Counsel ................................................................................................................ 22 
Evidentiary Matters ................................................................................................................. 24 
Discovery .......................................................................................................................... 25 
Admissibility of Evidence ................................................................................................. 26 
Coerced Statements ........................................................................................................... 27 
Hearsay .............................................................................................................................. 29 
Classified Evidence ........................................................................................................... 30 
Sentencing ............................................................................................................................... 32 
Post-Trial Procedure ................................................................................................................ 33 
Review and Appeal............................................................................................................ 33 
Protection Against Double Jeopardy ................................................................................. 35 
Chart 1. Comparison of Military Commission Rules .................................................................... 37 
Authority.................................................................................................................................. 37 
Procedure ................................................................................................................................. 37 
Jurisdiction over Persons ......................................................................................................... 38 
Jurisdiction over Offenses ....................................................................................................... 39 
Composition ............................................................................................................................ 39 
Chart 2. Comparison of Procedural Safeguards ............................................................................. 40 
Presumption of Innocence ....................................................................................................... 40 
Right to Remain Silent (Freedom from Coerced Statements) ................................................. 40 
Freedom from Unreasonable Searches and Seizures ............................................................... 42 
Effective Assistance of Counsel .............................................................................................. 43 
Right to Indictment and Presentment ...................................................................................... 44 
Right to Written Statement of Charges .................................................................................... 44 
Right to Be Present at Trial ..................................................................................................... 44 
Prohibition Against Ex Post Facto Crimes .............................................................................. 45 
Protection Against Double Jeopardy ....................................................................................... 46 
Speedy and Public Trial ........................................................................................................... 47 
Burden and Standard of Proof ................................................................................................. 48 
Privilege Against Self-Incrimination (Freedom from Compelled Testimony) ........................ 49 
Right to Examine or Have Examined Adverse Witnesses (Hearsay and Classified 
Evidence) .............................................................................................................................. 49 
Right to Compulsory Process to Obtain Witnesses and Other Evidence (Discovery) ............. 51 
Right to Trial by Impartial Judge ............................................................................................. 52 
Right to Trial by Impartial Jury ............................................................................................... 53 
Right to Appeal to Independent Reviewing Authority ............................................................ 53 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Protection Against Excessive Penalties ................................................................................... 55 
 
Tables 
Table 1. Military Commissions: Completed Cases at Trial Level ................................................... 5 
 
Contacts 
Author Contact Information........................................................................................................... 55 
 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Introduction 
The use of military commissions to try suspected terrorists has been the focus of intense debate 
(as well as significant litigation) since President Bush in November 2001 issued his original 
Military Order (M.O.) authorizing such trials.1 The M.O. specified that persons subject to it 
would have no recourse to the U.S. court system to appeal a verdict or obtain any other sort of 
relief, but the Supreme Court essentially invalidated that provision in its 2004 opinion, Rasul v. 
Bush.2 In response, Congress enacted the Detainee Treatment Act of 2005 (DTA).3 The DTA did 
not authorize military commissions, but amended Title 28, U.S. Code to revoke all judicial 
jurisdiction over habeas claims by persons detained as “enemy combatants,” and it created 
jurisdiction in the Court of Appeals for the District of Columbia Circuit to hear appeals of final 
decisions of military commissions. 
The Supreme Court, after finding that Congress’s efforts to strip it of jurisdiction did not apply to 
a case already pending before the Court, Hamdan v. Rumsfeld,4 invalidated the military 
commission system established by presidential order. The Court held that although Congress had 
in general authorized the use of military commissions, such commissions were required to follow 
procedural rules as similar as possible to courts-martial proceedings, as required by the Uniform 
Code of Military Justice (UCMJ).5 In response, Congress promptly passed the Military 
Commissions Act of 2006 (MCA 2006)6 to authorize military commissions and establish 
procedural rules that were modeled after, but departed from in some significant ways, the UCMJ. 
The MCA 2006 also amended the Detainee Treatment Act in order to strip the judiciary of habeas 
                                                 
1 Detention, Treatment, and Trial of Certain Non-Citizens in the War Against Terrorism §1(a), 66 Fed. Reg. 57,833 
(November 16, 2001) (hereinafter “M.O.”). President Bush subsequently determined that 20 of the detainees at the U.S. 
Naval Station in Guantánamo Bay held in connection with the conflict were subject to the M.O., and 10 were 
eventually charged for trial before military commissions. See Press Release, Department of Defense, President 
Determines Enemy Combatants Subject to His Military Order (July 3, 2003), available at http://www.defense.gov/
releases/release.aspx?releaseid=5511. According to the Defense Department, that determination is effectively “a grant 
of [military] jurisdiction over the person.” See John Mintz, 6 Could Be Facing Military Tribunals, WASH. POST, July 4, 
2003, at A1. In 2004, nine additional detainees were determined to be eligible. See Press Release, Department of 
Defense, Presidential Military Order Applied to Nine More Combatants (July 7, 2004), available a 
thttp://www.defenselink.mil/releases/release.aspx?releaseid=7525. In November 2005, five more detainees were 
charged. See Press Release, Department of Defense, Military Commission Charges Approved (November 7, 2005), 
available at http://www.defense.gov/releases/release.aspx?releaseid=9052. 
2 Rasul v. Bush, 542 U.S. 466 (2004). Persons subject to the M.O. were described as not privileged to “seek any 
remedy or maintain any proceeding, directly or indirectly” in federal or state court, the court of any foreign nation, or 
any international tribunal. M.O. at §7(b). However, the Bush Administration shortly thereafter indicated that defendants 
were not intended to be precluded from petitioning a federal court for a writ of habeas. See Alberto R. Gonzales, 
Martial Justice, Full and Fair, NY TIMES (op-ed), November 30, 2001. The government did not rely on the M.O. as the 
legal basis for asserting detainees had no right to pursue writs of habeas corpus, but the Court’s opinion served as a 
warning that military commission verdicts would be subject to collateral review. For a summary of Rasul and related 
cases, see CRS Report R41156, Judicial Activity Concerning Enemy Combatant Detainees: Major Court Rulings, by 
Jennifer K. Elsea and Michael John Garcia.  
3 Title 10 of P.L. 109-148 and Title 14 of P.L. 109-163. The two versions of the Detainee Treatment Act (DTA) were 
identical as enacted, but subsequent amendments have resulted in some differences in the text. 
4 Hamdan v. Rumsfeld, 548 U.S. 557 (2006), rev’g 415 F.3d 33 (D.C. Cir. 2005).  
5 10 U.S.C. §801 et seq. Military commissions were said to be authorized pursuant to 10 U.S.C. §§821 and 836. 
6 P.L. 109-366, 120 Stat. 2600, codified at chapter 47A of Title 10, U.S. Code (2006). 
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jurisdiction in all cases brought by detainees, including pending cases,7 but the Supreme Court 
held that provision to be an unconstitutional suspension of the Writ of Habeas Corpus.8  
President Bush reconstituted the military commissions under the MCA 2006 by issuing Executive 
Order 13425.9 The Department of Defense (DOD) issued regulations for the conduct of military 
commissions pursuant to the MCA 200610 and restarted the military commission proceedings, 
which resulted in three convictions under the Bush Administration. One detainee, David Matthew 
Hicks of Australia, was convicted of material support to terrorism pursuant to a plea agreement in 
2007.11 In 2008, Salim Hamdan was found guilty of one count of providing material support for 
terrorism and sentenced to 66 months’ imprisonment, but credited with five years’ time served.12 
Both men are now free from detention. Ali Hamza Ahmad Suliman al Bahlul of Yemen was found 
guilty of multiple counts of conspiracy and solicitation to commit certain war crimes and of 
providing material support for terrorism in connection with his role as Al Qaeda’s “propaganda 
chief.”13 He refused representation and boycotted most of his trial, and was subsequently 
sentenced to life imprisonment. The latter two convictions were reversed on appeal by the U.S. 
Court of Appeals for the D.C. Circuit.14 The government sought and was granted a rehearing en 
banc in the Bahlul case to appeal the decisions. 
No challenge to military commissions under the MCA 2006 reached the Supreme Court. 
President Obama halted the proceedings upon taking office in January 2009 in order to review 
whether to continue their use. The President issued an Executive Order requiring that the 
Guantánamo detention facility be closed no later than a year from the date of the Order.15 The 
Order required specified officials to review all Guantánamo detentions to assess whether the 
detainee should continue to be held by the United States, transferred or released to another 
country, or be prosecuted by the United States for criminal offenses.16 The Secretary of Defense 
was also required to take steps to ensure that all proceedings before military commissions and the 
United States Court of Military Commission Review were halted, although some pretrial 
proceedings continued to take place. One case was moved to a federal district court.17 
                                                 
7 P.L. 109-366 §7. 
8 Boumediene v. Bush, 533 U.S. 723 (2008). For an analysis of the case, see CRS Report R41156, Judicial Activity 
Concerning Enemy Combatant Detainees: Major Court Rulings, by Jennifer K. Elsea and Michael John Garcia. 
9 Exec. Ord. No. 13425, 72 Fed. Reg. 7737 (February 14, 2007). 
10 Department of Defense, The Manual for Military Commissions [“M.M.C. 2007”], January 18, 2007, available at 
http://www.defenselink.mil/news/MANUAL%20FOR%20MILITARY%20COMMISSIONS%202007%20signed.pdf. 
11 Press release, Department of Defense, Detainee Convicted of Terrorism Charge at Guantánamo Trial” (March 30, 
2007), available at http://www.defenselink.mil/releases/release.aspx?releaseid=10678. Hicks was sentenced to seven 
years’ confinement. As part of his pretrial agreement, his sentence was limited to nine months’ confinement to be 
served in Australia, with six years and three months suspended. 
12 Press release, Department of Defense, Detainee Transfer Announced (November 28, 2008), available at 
http://www.defenselink.mil/releases/release.aspx?releaseid=12372. 
13 Press release, Department of Defense, Detainee Sentenced To Life In Prison (November 3, 2008), available at 
http://www.defenselink.mil/releases/release.aspx?releaseid=12331. 
14 Hamdan v. United States, 696 F.3d 1238 (D.C. Cir. 2012); Al Bahlul v. United States, 2013 WL 297726 (D.C. Cir. 
January 25, 2013) (per curiam). 
15 Exec. Ord. 13492, Review and Disposition of Individuals Detained at the Guantánamo Bay Naval Base and Closure 
of Detention Facilities, 74 Fed. Reg. 4,897 (January 22, 2009). 
16 Id. at §4.  
17 Press Release, Department of Justice, Ahmed Ghailani Transferred from Guantánamo Bay to New York for 
Prosecution on Terror Charges (June 9, 2009), available at http://www.justice.gov/opa/pr/2009/June/09-ag-563.html. 
(continued...) 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
In May 2009, the Obama Administration announced that it was considering restarting the military 
commission system with some changes to the procedural rules.18 DOD informed Congress about 
modifications to the Manual for Military Commissions, to take effect July 14, 2009.19 The Senate 
passed the Military Commissions Act of 2009 (MCA 2009) as part of the Department of Defense 
Authorization Act (NDAA) for FY2010, S. 1391, to provide some reforms the Administration 
supported and to make other amendments to the Military Commissions Act, as described below. 
The bill that emerged from conference (H.R. 2647) contained some, but not all, of the proposals 
submitted by the Obama Administration, and was enacted October 28, 2009, P.L. 111-84.  
President Obama’s Detention Policy Task Force issued a preliminary report July 20, 2009, 
reaffirming that the White House considers military commissions to be an appropriate forum for 
trying some cases involving suspected violations of the laws of the war, although federal criminal 
court would be the preferred forum for trials of detainees.20 The disposition of each case was 
assigned to a team composed of Department of Justice (DOJ) and Department of Defense (DOD) 
personnel, including prosecutors from the Office of Military Commissions. Appended to the 
report was a set of criteria to govern the disposition of cases involving Guantánamo detainees. 
This protocol identified three broad categories of factors to be taken into consideration: 
•  Strength of interest, namely, the nature and gravity of offenses or underlying 
conduct; identity of victims; location of offense; location and context in which 
the individual was apprehended; and the conduct of the investigation. 
•  Efficiency, namely, protection of intelligence source and methods; venue; number 
of defendants; foreign policy concerns; legal or evidentiary problems; efficiency 
and resource concerns. 
•  Other prosecution considerations, namely, the extent to which the forum and 
offenses that can be tried there permit a full presentation of the wrongful conduct, 
and the available sentence upon conviction.  
Federal prosecutors are to evaluate their cases under “traditional principles of federal 
prosecution.”  
On November 13, 2009, Attorney General Holder announced his decision to transfer the five 
“9/11 conspirators,” who include Khalid Sheikh Mohammed, Walid Muhammed Salih Mubarak 
Bin Attash, Ramzi Bin Al Shibh, Ali Abdul-Aziz Ali, and Mustafa Ahmed Al Hawsawi, to the 
Southern District of New York to stand trial.21 Five other detainees to be tried by military 
commission included Omar Khadr, a Canadian citizen captured as a teenager and charged before 
                                                                  
(...continued) 
Ghailani was ultimately convicted and sentenced to life in prison. See Benjamin Weiser, Ex-Detainee Gets Life 
Sentence in Embassy Blasts, N.Y. TIMES, January 26, 2011, at A18. For more information, see CRS Report R41156, 
Judicial Activity Concerning Enemy Combatant Detainees: Major Court Rulings, by Jennifer K. Elsea and Michael 
John Garcia. 
18 Peter Finn, Obama Set to Revive Military Commissions, WASH. POST, May 9, 2009. 
19 Letter from Robert M. Gates, Secretary of Defense, to Senator Carl Levin, May 15, 2009.  
20 Memorandum from the Detention Policy Task Force to the Attorney General and the Secretary of Defense, July 20, 
2009, http://www.scotusblog.com/wp-content/uploads/2009/07/law-of-war-prosecution-prelim-report-7-20-09.pdf. 
21 Press Release, U.S. Department of Justice, “Departments of Justice and Defense Announce Forum Decisions for Ten 
Guantánamo Detainees,” November 13, 2009, available at http://www.justice.gov/opa/pr/2009/November/09-ag-
1224.html. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
a military commission for allegedly throwing a hand grenade that killed a U.S. medic in 
Afghanistan;22 Abd al-Rahim al-Nashiri, whose military commission charges related to the 
October 2000 attack on the USS Cole were previously withdrawn in February 2009; Ahmed 
Mohammed Ahmed Haza al Darbi, accused of participating in an Al Qaeda plot to blow up oil 
tankers in the Straits of Hormuz,23 and two other detainees about whom no further information 
was given.24 
As the deadline for closing the detention facility at Guantánamo passed unmet, the Obama 
Administration reportedly completed its assessment, determining that about 50 of the detainees 
held there would continue to be held without trial, that around 40 detainees would be prosecuted 
in military commission or federal court, and that the remaining 110 detainees would be released 
once a suitable country has agreed to take each of them.25 However, the transfer of 30 detainees 
of Yemeni nationality was stymied because an Al Qaeda affiliate in Yemen is suspected to have 
been behind attempt to blow up a civilian airliner on Christmas Day 2009.26 
                                                 
22 Khadr pleaded guilty in 2010 and was sentenced to 40 years in prison. He will serve eight years pursuant to his plea 
agreement, and has been transferred to Canada to serve the remaining portion of his sentence. 
23 Al Darbi pleaded guilty in February 2014 under an agreement that provides a sentence of between 13 and 15 years. 
See Charlie Savage, Guantánamo Detainee Pleads Guilty in 2002 Attack on Tanker Off Yemen, NY TIMES, February 
20, 2014. 
24 One of these may have been Majid Shoukat Khan, who has pleaded guilty to conspiracy and other crimes in 
connection with the August 2003 bombing of the J.W. Marriot hotel in Indonesia and an attempted assassination of 
former Pakistani President Pervez Musharraf. The other may have been Noor Uthman Muhammed, who pleaded guilty 
to conspiracy and providing material support for terrorism in connection with service at the Khalden terrorist training 
camp in Afghanistan. He was sentenced in February 2011 to 14 years’ imprisonment, but his plea agreement provided 
for only 34 months.  
25 See Charlie Savage, Detainees Will Still Be Held, but Not Tried, Official Says, NY TIMES, January 22, 2010. 
26 Id.  
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Table 1. Military Commissions: Completed Cases at Trial Level 
Year of 
Accused 
Verdict 
Result 
Charges  
Post-military commission developments 
David Hicks 
2007 
guilty plea 
material support 
transferred to Australia to serve remainder of 
for terrorism 
unsuspended portion (nine months) of seven-
year sentence; has submitted new appeal to 
Court of Military Commissions Review 
(CMCR) 
Salim Hamdan 
2009 
guilty finding 
material support 
overturned on appeal  by the U.S. Court of 
for terrorism, 
Appeals for the D.C. Circuit 
acquitted on 
conspiracy 
charge 
Ali al Bahlul 
2009 
guilty finding 
conspiracy and 
appeal to be heard en banc at the U.S. Court 
providing 
of Appeals for the D.C. Circuit 
material support 
for terrorism 
Ibrahim al-Qosi  2010 
guilty plea 
conspiracy and 
transferred to Sudan after serving two-year 
providing 
sentence with 12 years suspended; appellate 
material support 
counsel is seeking to appeal to CMCR 
for terrorism 
Omar Khadr 
2010 
guilty plea 
murder and 
transferred to Canada to serve remainder of 
attempted 
eight-year sentence;  has submitted new 
murder in 
appeal to CMCR 
violation of the 
law of war, 
providing 
material support 
for terrorism, 
conspiracy, and 
spying 
Noor Uthman 
2011 guilty 
plea providing 
34 months’ confinement pursuant to plea 
Muhammed 
material support 
agreement, transferred to Sudan December 
for terrorism and  2013 
conspiracy 
Majid Shoukat 
2012 guilty 
plea murder 
and  sentencing is delayed for four years, limited by 
Khan 
attempted 
plea agreement to 25 years’ confinement 
murder in 
violation of the 
law of war, 
providing 
material support 
for terrorism, 
spying and 
conspiracy 
Ahmed 
2014 guilty 
plea conspiracy,  sentencing is delayed for three years and six 
Mohammed 
attacking civilian 
months, limited by plea agreement to 15 
Ahmed Haza al 
objects, 
years’ confinement 
Darbi 
hazarding a 
vessel, terrorism, 
attempt, and 
aiding the enemy 
Source: Prepared by CRS from data derived from the Military Commissions website, http://www.mc.mil. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Military Commissions 
Military commissions are courts usually set up by military commanders in the field to try persons 
accused of certain offenses during war.27 They may also try persons for ordinary crimes during 
periods of martial law or military occupation, where regular civil courts are not able to function.28 
Past military commissions trying enemy belligerents for war crimes directly applied the 
international law of war, without recourse to domestic criminal statutes, unless such statutes were 
declaratory of international law.29 Historically, military commissions have applied the same set of 
procedural rules that applied in courts-martial.30 By statute, military commissions have long been 
available to try “offenders or offenses designated by statute or the law of war.”31 For the most 
part, military commissions have been employed where U.S. armed forces have established a 
military government or martial law, as in the war with Mexico, 1846-1848, the Civil War, the 
Philippine Insurrection of 1899-1902, and in occupied Germany and Japan after World War II.32 
President Bush’s Military Order setting up military commissions appeared to have been designed 
to replicate a pair of military commission orders issued during World War II by President 
Roosevelt for the trial of German saboteurs caught within the territory of the United States after 
having evaded U.S. coastal defenses. These tribunals were historically a bit anomalous in that 
they took place in Washington, DC, during a period when the civilian courts were open. A similar 
practice during the Civil War, which accounted for a small number of the military commission 
cases, was held unconstitutional. The Supreme Court held essentially in Ex parte Milligan33 that 
military trials of persons who had never been members of the armed forces of the United States 
could never be valid on friendly territory where martial law has not been declared and civilian 
courts are functioning. However, the Supreme Court upheld the F.D.R. tribunals by explaining 
                                                 
27 See CRS Report RL31191, Terrorism and the Law of War: Trying Terrorists as War Criminals before Military 
Commissions, by Jennifer K. Elsea (providing a general background of U.S. history of military commissions). 
28 See Hamdan v. Bush, 548 U.S. 557, 595 (2006). In looking at historical precedent, the Hamdan Court suggested, it is 
important to distinguish which type of jurisdiction a military commission is exercising, although the distinction is often 
blurred. Id. at 597 & note 7. 
29 See U.S. Army Field Manual (FM) 27-10, The Law of Land Warfare, Section 505(e) [hereinafter “FM 27-10”]. 
30 See WILLIAM WINTHROP, MILITARY LAW AND PRECEDENTS 841-42 (2d ed. 1920)(noting that “in the absence of any 
statute or regulation,” the same principles and procedures commonly govern, though possibly more “liberally construed 
and applied”); David Glazier, Note, Kangaroo Court or Competent Tribunal?: Judging the 21st Century Military 
Commission, 89 VA. L. REV. 2005 (2003). 
31 10 U.S.C. §821. There are only two statutory offenses under the Uniform Code of Military Justice (UCMJ) for which 
convening a military commission is explicitly recognized: aiding the enemy and spying (in time of war). 10 U.S.C. 
§§904 and 906, respectively. The circumstances under which civilians accused of aiding the enemy may be tried by 
military tribunal have not been decided, but a court interpreting the article may limit its application to conduct 
committed in territory under martial law or military government, within a zone of military operations or area of 
invasion, or within areas subject to military jurisdiction. See FM 27-10, supra footnote 29, at para. 79(b)(noting that 
treason and espionage laws are available for incidents occurring outside of these areas, but are triable in civil courts); 
GEORGE B. DAVIS, A TREATISE ON THE MILITARY LAW OF THE UNITED STATES 417-18 (3d ed. 1913)(arguing that arts. 45 
& 46 of the Articles of War, the precursors to 10 U.S.C. §§904 & 906, were essentially reliant on martial law to 
establish jurisdiction over civilians). Spying is not technically a violation of the law of war, but violates domestic law 
and traditionally may be tried by military commission. See FM 27-10, supra footnote 29, at para. 77 (explaining that 
spies are not punished as “violators of the law of war, but to render that method of obtaining information as dangerous, 
difficult, and ineffective as possible”). 
32 For a review of military commission precedent, see David Glazier, Precedents Lost: The Neglected History of the 
Military Commission, 46 VA. J. INT'L L. 5 (2005). 
33 71 U.S. (4 Wall.) 1 (1867). 
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that the holding in Milligan was limited to cases in which civilians—persons who are not 
members of the armed forces of an enemy government—were tried by military commission, and 
did not preclude the government from trying enemy belligerents for violations of the law of war, 
regardless of the operational status of the civilian courts.  
The Bush Administration established rules prescribing detailed procedural safeguards for the 
tribunals.34 These rules were praised as a significant improvement over what might have been 
permitted under the language of the M.O., but some continued to argue that the enhancements did 
not go far enough.35 Critics also noted that the rules did not address the issue of indefinite 
detention without charge, as appeared to be possible under the original M.O.,36 or that the 
Department of Defense may continue to detain persons who have been found not guilty by a 
military commission.37 The Pentagon reportedly stated that its Inspector General (IG) looked into 
allegations, made by military lawyers assigned as prosecutors to the military commissions, that 
the proceedings were rigged to obtain convictions, but the IG did not substantiate the charges.38 
The Military Commissions Act (“MCA”)39 grants the Secretary of Defense express authority to 
convene military commissions to prosecute those fitting the definition under the MCA of “alien 
unprivileged enemy belligerents.”40 The Secretary delegated the authority to a specially appointed 
“convening authority,” who has responsibility for accepting or rejecting charges referred by the 
prosecution team, convening military commissions for trials, detailing military commission 
members and other personnel, approving requests from trial counsel to communicate with the 
media, approving requests for expert witnesses, approving plea agreements, carrying out post-trial 
reviews and forwarding cases for review, along with other duties spelled out in the MCA or in 
DOD’s Regulation for Trial by Military Commission.41 
The MCA eliminates the requirement for military commissions to conform to either of the two 
uniformity requirements in article 36, UCMJ, which President Bush’s military commissions were 
                                                 
34 Military Commission Order No. 1 (“M.C.O. No. 1”), reprinted at 41 I.L.M. 725 (2002). A revision was issued 
August 31, 2005. The Department of Defense (DOD) subsequently released ten “Military Commission Instructions” 
(“M.C.I. No. 1-10”) to elaborate on the set of procedural rules to govern military tribunals. The instructions set forth 
the elements of some crimes to be tried by military commission, established guidelines for civilian attorneys, and 
provided other administrative guidance and procedures for military commissions. These historical documents can be 
found at http://www.mc.mil/LEGALRESOURCES/MilitaryCommissionsDocuments/HistoricalDocuments.aspx. 
35 See ACTL, Supplemental Report on Military Commissions for the Trial of Terrorists, October 2005, online at 
http://www.actl.com/AM/Template.cfm?Section=Home&template=/CM/ContentDisplay.cfm&ContentID=2152.  
36 The Bush Administration did not explicitly use this authority; instead, it characterized the prisoners as “enemy 
combatants” detained pursuant to the law of war. See, e.g., Response of the United States to Request for Precautionary 
Measures - Detainees in Guantánamo Bay, Cuba to the Inter-American Commission on Human Rights, Organization of 
American States 25 (2002)(“It is humanitarian law, and not human rights law, that governs the capture and detention of 
enemy combatants in an armed conflict.”) 
37 See Bruce Zagaris, U.S. Defense Department Issues Order on Military Commissions, 18 No. 5 INT’L ENFORCEMENT 
L. REP 215 (2002) (citing comments by former DOD chief counsel William J. Haynes II to a New York Times 
reporter). 
38 See Neil A. Lewis, Two Prosecutors Faulted Trials for Detainees, NY TIMES, August 1, 2005, at A1. 
39 P.L. 111-84 at codified as amended at chapter 47a of Title 10, U.S. Code. Unless otherwise noted, the terms 
“Military Commissions Act” or “MCA” (without specifying the year enacted) in this report refer to the 2009 version of 
the act as codified in Title 10.  
40 10 U.S.C. §948h and 948c. 
41 Available at http://www.defenselink.mil/news/Apr2007/Reg_for_Trial_by_mcm.pdf. The latest version of the 
regulation was published in 2011 and is available at http://www.mc.mil/Portals/0/2011%20Regulation.pdf. 
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held in Hamdan to violate. Instead, it establishes chapter 47A in Title 10, U.S. Code and excepts 
military commissions under this chapter from the requirements in article 36.42 It provides that the 
UCMJ “does not, by its terms, apply to trial by military commissions except as specifically 
provided in this chapter.” While declaring that the enacted chapter is “based upon the procedures 
for trial by general courts-martial under [the UCMJ],” it establishes that “[t]he judicial 
construction and application of [the UCMJ], while instructive, is therefore not of its own force 
binding on military commissions established under this chapter.”43 It expressly exempts these 
military commissions from UCMJ articles 10 (speedy trial), 31 (self-incrimination warnings) and 
32 (pretrial investigations),44 and the MCA 2006 amended articles 21, 28, 48, 50(a), 104, and 106 
of the UCMJ to except military commissions under chapter 47A.45 Other provisions of the UCMJ 
are to apply to trial by military commissions under chapter 47A only to the extent provided 
therein.46 
Jurisdiction 
The MCA establishes jurisdiction for military commissions somewhat more narrowly than that 
asserted in President Bush’s M.O. The M.O. was initially criticized by some as overly broad in its 
assertion of jurisdiction, because it could be interpreted to cover non-citizens who had no 
connection with Al Qaeda or the terrorist attacks of September 11, 2001, as well as offenders or 
offenses not triable by military commission pursuant to statute or the law of war.47 A person 
designated by President Bush as subject to his M.O. was amenable to detention and possible trial 
by military tribunal for violations of the law of war and “other applicable law.”48 The MCA 2006 
largely validated President Bush’s jurisdictional scheme for military commissions. 
Jurisdiction over the Offender 
The MCA, as amended in 2009, authorizes military commissions to try any “alien unprivileged 
enemy belligerent,” which includes an individual (other than a privileged belligerent)49 who: 
(A) has engaged in hostilities against the United States or its coalition partners; 
                                                 
42 MCA 2006 §4 (adding to 10 U.S.C. §836(a) the words “except as provided in chapter 47A of this title” and to 
§836(b) the words “except insofar as applicable to military commissions established under chapter 47A of this title”). 
43 10 U.S.C. §948b. 
44 10 U.S.C. §948b(d). 
45 MCA 2006 §4 (amending 10 U.S.C. §§821(jurisdiction of general courts-martial not exclusive), 828 (detail or 
employment of reporters and interpreters), 848 (power to punish contempt), 850(a) (admissibility of records of courts 
of inquiry), 904 (aiding the enemy), and 906 (spying)). The 2009 MCA amendments, Title XVIII of P.L. 111-84, 
enable military commissions under chapter 47A to try alien enemy unprivileged belligerents for violating 10 U.S.C. 
§§904 and 906, but did not amend 10 U.S.C. §§904 & 906 to reflect the change. 
46 10 U.S.C. §948b(d)(2). 
47 For a discussion of criticism related to the M.O. and M.C.O. No. 1, see CRS Report RL31600, The Department of 
Defense Rules for Military Commissions: Analysis of Procedural Rules and Comparison with Proposed Legislation and 
the Uniform Code of Military Justice, by Jennifer K. Elsea; NATIONAL INSTITUTE OF MILITARY JUSTICE, ANNOTATED 
GUIDE: PROCEDURES FOR TRIALS BY MILITARY COMMISSIONS OF CERTAIN NON-UNITED STATES CITIZENS IN THE WAR 
AGAINST TERRORISM 10-11(2004)(hereinafter “NIMJ”). 
48 M.O. §1(e) (finding such tribunals necessary to protect the United States and for effective conduct of military 
operations). 
49 A privileged belligerent is defined “ an individual belonging to one of the eight categories enumerated in Article 4 of 
the Geneva Convention Relative to the Treatment of Prisoners of War,” 10 U.S.C. §948a(6). 
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(B) has purposefully and materially supported hostilities against the United States or its 
coalition partners; or 
(C) was a part of Al Qaeda at the time of the alleged offense under [chapter 47A of Title 10, 
U.S. Code].50 
Thus, persons who do not directly participate in hostilities, but “purposefully and materially” 
support hostilities, are subject to trial under the MCA.51 Citizens who fit the definition of 
“unprivileged enemy belligerent” are not amenable to trial by military commission under the 
MCA, but their detention is not expressly precluded.52 
The MCA, as amended, defines “hostilities” to mean any conflict “subject to the laws of war.”53 It 
does not explain what conduct amounts to “supporting hostilities.” To the extent that the 
jurisdiction is interpreted to include conduct that falls outside the accepted definition of 
participation in an armed conflict, the MCA might run afoul of the courts’ historical aversion to 
trying civilians before military tribunals when other courts are available.54 It is unclear whether 
this principle would apply to aliens captured and detained overseas, but the MCA does not appear 
to exempt from military jurisdiction permanent resident aliens captured in the United States who 
might otherwise meet the definition of “unprivileged enemy belligerent.” It is generally accepted 
that aliens within the United States are entitled to the same protections in criminal trials that apply 
to U.S. citizens. Therefore, to subject persons to trial by military commission who do not meet the 
exception carved out by the Supreme Court in ex parte Quirin55 for unlawful belligerents, to the 
extent such persons enjoy constitutional protections, would likely raise significant constitutional 
                                                 
50 10 U.S.C. §948a(7). Prior to the 2009 amendment, any alien “unlawful enemy combatant” was subject to 
jurisdiction, which was defined to mean: 
(i) a person who has engaged in hostilities or who has purposefully and materially supported 
hostilities against the United States or its co-belligerents who is not a lawful enemy combatant 
(including a person who is part of the Taliban, Al Qaeda, or associated forces); or 
(ii) a person who, before, on, or after the date of the enactment of the Military Commissions Act of 
2006, has been determined to be an unlawful enemy combatant by a Combatant Status Review 
Tribunal or another competent tribunal established under the authority of the President or the 
Secretary of Defense. 
Previous 10 U.S.C. §948a(1). 
51 The definition applies to military commission jurisdiction, and does not describe who can be detained under the 
AUMF. Some judges in the U.S. District Court for the District of Columbia have adopted a more restrictive definition 
to describe such persons, who were termed “enemy combatants” by the Bush Administration. See Mattan v. Obama, 
618 F. Supp. 2d 24 (D.D.C. 2009) (Government’s detention authority covers individuals who are “part of” enemy 
forces, but does not extend to those who “supported” such forces, although evidence of such support would be 
considered in determining whether a detainee should be considered “part of” the forces); Hamlily v. Obama, 616 F. 
Supp. 2d 63 (D.D.C. 2009) (neither AUMF nor the law of war authorizes government’s detention of individual who 
substantially supports, but is not part of, targeted organization, nor to those who have only directly supported 
hostilities); Gherebi v. Obama, 609 F. Supp. 2d 43 (D.D.C. 2009) (President has the authority to detain persons who 
were “part of, or substantially supported, the Taliban or al-Qaeda forces that are engaged in hostilities against the 
United States or its coalition partners, provided that the terms ‘substantially supported’ and ‘part of’ are interpreted to 
encompass only individuals who were members of the enemy organization’s armed forces, as that term is intended 
under the laws of war, at the time of their capture.”).  
52 For analysis of the authority to detain U.S. citizens, see CRS Report R42337, Detention of U.S. Persons as Enemy 
Belligerents, by Jennifer K. Elsea 
53 10 U.S.C. §948a(9). 
54 See, e.g., Ex parte Milligan, 71 U.S. (4 Wall.) 2 (1866); Duncan v. Kahanamoku, 327 U.S. 304 (1945). 
55 317 U.S. 1 (1942). 
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questions. To date, no resident aliens have been charged for trial before a military commission 
under the MCA. 
As originally enacted, the MCA 2006 did not specifically identify who was to make the 
determination that defendants met the definition of “unlawful enemy combatant.” The 
government sought to establish jurisdiction based on the determinations of Combatant Status 
Review Tribunals (CSRTs), set up by the Pentagon to determine the status of detainees using 
procedures similar to those the Army uses to determine POW status during traditional wars.56 The 
CSRTs, however, were not empowered to determine whether the enemy combatants are unlawful 
or lawful, which led two military commission judges to hold that CSRT determinations are 
inadequate to form the basis for the jurisdiction of military commissions.57 The Court of Military 
Commission Review (CMCR) reversed.58 While it agreed that the CSRT determinations are 
insufficient by themselves to establish jurisdiction, it found the military judge erred in declaring 
that the status determination had to be made by a competent tribunal other than the military 
commission itself. 
In denying the government’s request to find that CSRT determinations are sufficient to establish 
jurisdiction over the accused, the CMCR interpreted the MCA to require more than establishing 
membership in Al Qaeda or the Taliban. The CMCR found 
no support for [the government’s] claim that Congress, through the M.C.A., created a 
“comprehensive system” which sought to embrace and adopt all prior C.S.R.T. 
determinations that resulted in “enemy combatant” status assignments, and summarily turn 
those designations into findings that persons so labeled could also properly be considered 
“unlawful enemy combatants.” Similarly, we find no support for [the government’s] position 
regarding the parenthetical language contained in § 948a(1)(A)(i) of the M.C.A.—“including 
a person who is part of the Taliban, Al Qaeda, or associated forces.” We do not read this 
language as declaring that a member of the Taliban, Al Qaeda, or associated forces is per se 
an “unlawful enemy combatant” for purposes of exercising criminal jurisdiction before a 
military commission. We read the parenthetical comment as simply elaborating upon the 
sentence immediately preceding it. That is, that a member of the Taliban, Al Qaeda, or 
associated forces who has engaged in hostilities or who has purposefully and materially 
supported hostilities against the United States or its co-belligerents will also qualify as an 
“unlawful enemy combatant” under the M.C.A. (emphasis added [by the court]).59 
As a consequence of the decision, the prosecution has the burden of proving jurisdiction over 
each person charged for trial by a military commission. The Manual for Military Commissions 
was amended in May 2009 to reflect this practice,60 and the 2009 MCA amended 10 U.S.C. 
Section 948d to task the military commission with establishing its own jurisdiction. Under the 
                                                 
56 See Department of Defense (DOD) Fact Sheet, “Combatant Status Review Tribunals,” available at 
http://www.defenselink.mil/news/Jul2004/d20040707factsheet.pdf. CSRT proceedings are modeled on the procedures 
of Army Regulation (AR) 190-8, Enemy Prisoners of War, Retained Personnel, Civilian Internees and Other Detainees 
(1997), which establishes administrative procedures to determine the status of detainees under the Geneva Conventions 
and prescribes their treatment in accordance with international law. It does not include a category for “unlawful” or 
“enemy” combatants, who would presumably be covered by the other categories. 
57 See Josh White and Shailagh Murray, Guantánamo Ruling Renews the Debate Over Detainees, WASH. POST, June 6, 
2007, at A3. 
58 United States v. Khadr, 717 F. Supp. 2d 1215 (USCMCR 2007). 
59 Id. at 1228. The statutory language defining who can be tried was altered by the MCA 2009. See supra, footnote 50. 
60 Gates letter, supra footnote 19. 
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amended language, membership in Al Qaeda (but not the Taliban) appears sufficient to establish 
jurisdiction, regardless of whether the defendant participated in or even supported hostilities, 
although the defendant must generally be alleged to have committed one of the listed crimes “in 
the context of and associated with hostilities.”61 
Subject Matter Jurisdiction 
The MCA provides jurisdiction to military commissions to try alien unprivileged belligerents for 
listed offenses as well as Sections 904 and 906 of Title 10 (aiding the enemy and spying), or the 
law of war, “whether such offense was committed before, on, or after September 11, 2001.”62 
Crimes to be triable by military commission are defined in subchapter VIII (10 U.S.C. §§950p–
950t). The MCA defines the following offenses: murder of protected persons; attacking civilians, 
civilian objects, or protected property; pillaging; denying quarter; taking hostages; employing 
poison or similar weapons; using protected persons or property as shields; torture, cruel or 
inhuman treatment; intentionally causing serious bodily injury; mutilating or maiming; murder in 
violation of the law of war; destruction of property in violation of the law of war; using treachery 
or perfidy; improperly using a flag of truce or distinctive emblem; intentionally mistreating a 
dead body; rape; sexual assault or abuse; hijacking or hazarding a vessel or aircraft; terrorism; 
providing material support for terrorism; wrongfully aiding the enemy; spying; attempts; 
conspiracy; solicitation; contempt; perjury and obstruction of justice.  
The MCA largely adopted the list of offenses DOD had authorized for trial by military 
commission under the presidential order.63 That list was not meant to be exhaustive. Rather, it was 
intended as an illustration of acts punishable under the law of war64 or triable by military 
commissions.65 The regulations contained an express prohibition of trials for ex post facto 
crimes.66 
Although many of the crimes defined in the MCA seem to be well established offenses against the 
law of war, at least in the context of an international armed conflict,67 some of the listed crimes 
                                                 
61 10 U.S.C. §950p(c). 
62 10 U.S.C. §948d. 
63 Military Commission Instruction (M.C.I.) No. 2, Crimes and Elements for Trials by Military Commission. M.C.I. 
No. 2 was published in draft form by DOD for outside comment. The final version appears to have incorporated some 
of the revisions, though not all, suggested by those who offered comments. See NATIONAL INSTITUTE OF MILITARY 
JUSTICE, MILITARY COMMISSION INSTRUCTIONS SOURCEBOOK 95 (2003) [hereinafter “SOURCEBOOK”]. 
64 Crimes against the law of war listed in M.C.I. No. 2 were: 1) Willful Killing of Protected Persons; 2) Attacking 
Civilians; 3) Attacking Civilian Objects; 4) Attacking Protected Property; 5) Pillaging; 6) Denying Quarter; 7) Taking 
Hostages; 8) Employing Poison or Analogous Weapons; 9) Using Protected Persons as Shields; 10) Using Protected 
Property as Shields; 11) Torture; 12) Causing Serious Injury; 13) Mutilation or Maiming; 14) Use of Treachery or 
Perfidy; 15) Improper Use of Flag of Truce; 16) Improper Use of Protective Emblems; 17) Degrading Treatment of a 
Dead Body; and 18) Rape. 
65 Crimes “triable by military commissions” included 1) Hijacking or Hazarding a Vessel or Aircraft; 2) Terrorism; 3) 
Murder by an Unprivileged Belligerent; 4) Destruction of Property by an Unprivileged Belligerent; 5) Aiding the 
Enemy; 6) Spying; 7) Perjury or False Testimony; and 8) Obstruction of Justice Related to Military Commissions. 
Listed as “other forms of liability and related offenses” are: 1) Aiding or Abetting; 2) Solicitation; 3) 
Command/Superior Responsibility - Perpetrating; 4) Command/Superior Responsibility - Misprision; 5) Accessory 
After the Fact; 6) Conspiracy; and 7) Attempt. 
66 See M.C.I. No. 2 §3(A) (“No offense is cognizable in a trial by military commission if that offense did not exist prior 
to the conduct in question.”). 
67 International armed conflicts are governed primarily by the Hague Convention No. IV Respecting the Laws and 
(continued...) 
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may be new. For example, a plurality of the Supreme Court in Hamdan agreed that conspiracy is 
not a war crime under the traditional law of war.68 The crime of “murder in violation of the law of 
war,” which punishes persons who commit hostile acts that result in the death of any persons, 
including lawful combatants, may also be new, depending on how it is interpreted. The 
Department of Defense had argued that the element “in violation of the law of war” is established 
by showing that the perpetrator is an unprivileged belligerent.69 The latest version of the Manual 
for Military Commissions70 reflects the understanding that the offense may be tried by military 
commission even if it does not violate the international law of war.71 
                                                                  
(...continued) 
Customs of War on Land, October 18, 1907, 36 Stat. 2277 (“Hague Convention”), and the Geneva Conventions.  
Non-international armed conflicts are not covered by the Hague Convention, and are covered only by Common Article 
3 of the Geneva Conventions. However, some international criminal tribunals have worked to define war crimes 
applicable in non-international armed conflicts. For example, Article 3 of the Statute governing the International 
Criminal Tribunal for the former Yugoslavia (ICTY) includes the following as violations of the laws or customs of war 
in non-international armed conflict. 
Such violations shall include, but not be limited to: 
(a) employment of poisonous weapons or other weapons calculated to cause unnecessary suffering; 
(b) wanton destruction of cities, towns or villages, or devastation not justified by military necessity; 
(c) attack, or bombardment, by whatever means, of undefended towns, villages, dwellings, or 
buildings; 
(d) seizure of, destruction or wilful damage done to institutions dedicated to religion, charity and 
education, the arts and sciences, historic monuments and works of art and science; 
(e) plunder of public or private property. 
UN Doc. S/Res/827 (1993), art. 3. The ICTY Statute and procedural rules are available at http://www.un.org/icty/
legaldoc-e/index.htm. The Trial Chamber in the case Prosecutor v. Naletilic and Martinovic, (IT-98-34)March 31, 
2003, interpreted Article 3 of the Statute to cover specifically: “(i) violations of the Hague law on international 
conflicts; (ii) infringements of provisions of the Geneva Conventions other than those classified as grave breaches by 
those Conventions; (iii) violations of [Common Article 3] and other customary rules on internal conflicts, and (iv) 
violations of agreements binding upon the parties to the conflict” Id. at para. 224. See also Prosecutor v. Tadic, (IT-94-
1) (Appeals Chamber), Decision on the Defence Motion for Interlocutory Appeal on Jurisdiction, October 2, 1995, 
para. 86-89. 
The Appeals Chamber there set forth factors that make an offense a “serious” violation necessary to bring it within the 
ICTY’s jurisdiction: 
(i) the violation must constitute an infringement of a rule of international humanitarian law; 
(ii) the rule must be customary in nature or, if it belongs to treaty law, the required conditions must 
be met ... 
(iii) the violation must be “serious,” that is to say, it must constitute a breach of a rule protecting 
important values, and the breach must involve grave consequences for the victim.... 
(iv) the violation of the rule must entail, under customary or conventional law, the individual 
criminal responsibility of the person breaching the rule. 
Id. at para. 94. 
68 Hamdan v. Rumsfeld, 548 U.S. 557, 611 (2006). 
69 M.M.C. 2007, supra footnote 10, at IV-11-12. The comment on the crime “intentionally causing serious bodily 
injury” stated that “For the accused to have been acting in violation of the law of war, the accused must have taken acts 
as a combatant without having met the requirements for lawful combatancy.” With respect to the crime “destruction of 
property in violation of the law of war,” the M.M.C. stated that “A ‘violation of the law of war’ may be established by 
proof of the status of the accused as an unlawful combatant or by proof of the character of the property destroyed, or 
both.” Id. at IV-13.  
70 Department of Defense, Manual for Military Commissions 2012 (M.M.C. 2012). 
71 Id. at IV-14 (comment to the crime of murder in violation of the law of war). Oddly, that the killing “was in violation 
of the law of war” remains an element of the offense. Id.  
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While it appears to be well established that a civilian who kills a lawful combatant is triable for 
murder and cannot invoke the defense of combatant immunity, 72 it is not clear that the murder 
constitutes a violation of the law of war (rather than domestic or martial law),73 or that the same 
principle applies in armed conflicts of a non-international nature, where combatant immunity 
does not apply.74 The International Criminal Tribunal for the former Yugoslavia (ICTY) has found 
that war crimes in the context of non-international armed conflict include murder of protected 
persons, but have found that the killing of a combatant is not necessarily a war crime.75 Thus, 
prison guards at Omarska and other detention camps were found guilty, among other crimes, of 
“murder, as a violation of the laws or customs of war” for causing the deaths of prisoners.76 
Similarly, the International Criminal Court applies a definition of murder in the context of a non-
international armed conflict to require that the victim is a protected person,77 while the killing (or 
wounding) of a “combatant adversary” is defined as a war crime only if it is done 
“treacherously.”78 
                                                 
72 Civil War records contain many examples of military commission cases against persons who, although not members 
of “any lawfully organized or authorized force at war with the United States,” participated in the killing of other 
persons, including soldiers, “contrary to the laws and customs of war.” See, e.g. Trial of Smith Crim, General Order 
(G.O.) 151, May 26, 1863 (trial of civilian in Missouri for murder of a U.S. Army officer); Trial of Thomas J. Caldwell 
and others, G.O. 267, August 3, 1863 (trial of guerrilla for murder of U.S. soldier as well as loyal citizens in Missouri). 
However, the fact that specifications of the charges often included reference to the defendant being “a citizen of the 
United States and owing allegiance thereto” or that the act took place “within the lines occupied by the lawfully 
authorized military force of the United States” suggests that the actual legal basis for the charge was a state of martial 
law or military occupation rather than the law of war as it applies to belligerents.  
73 See, generally, David R. Frakt, Direct Participation in Hostilities as a War Crime: America’s Failed Efforts to 
Change the Law of War, 46 VAL. U. L. REV. 729 (2012). 
74 The U.S. Civil War was considered to be governed by the rules of international warfare as far as combatant immunity 
and related concepts were concerned. See, e.g., Trial of T.E. Hogg and others, G.O. 52, HQ, Department of the Pacific, 
June 27, 1865, reprinted in [Series II] 7 WAR OF THE REBELLION: OFFICIAL RECORDS OF THE UNION AND CONFEDERATE 
ARMIES (“OFFICIAL RECORDS”) 674, 677 (1899) (“[C]ivil wars are not distinguishable from other wars as to belligerent 
and neutral rights ... in such contests the principles of public law in relation to belligerents must govern, and all the 
rights which a state of war gives to public enemies are to be allowed to the respective parties engaged in 
them.”)(quoting “Stevenson to Palmerston”); General Order No. 1, HQ, Dept. of the Missouri, January 1, 1862, 
reprinted in [Series I] 8 OFFICIAL RECORDS at 476-78. With respect to the current conflict against Al Qaeda, the 
Supreme Court in Hamdan held that Common Article 3 applies, interpreting “conflict not of an international nature” in 
the definition “in contradistinction to a conflict between nations,” which the Geneva Conventions designate a “conflict 
of international character.” 548 U.S. 557, 630 (2006).  
75 See, e.g., Prosecutor v. Pavle Strugar, Case No. It-01-42-A (Appeals Chamber), Judgment, July 17, 2008, para. 172 
(“In order to prove cruel treatment as a violation of Common Article 3 ... the Prosecution must prove beyond a 
reasonable doubt that the victim of the alleged offence was a person taking no active part in the hostilities”); Prosecutor 
v. Kvocka et al., Case No. IT-98-30/1 (Trial Chamber), November 2, 2001, para. 124: (“An additional requirement for 
Common Article 3 crimes under Article 3 of the Statute is that the violations must be committed against persons 
‘taking no active part in the hostilities.’”), aff’d. Case No. IT-98-30/1-A (Appeals Chamber), February 28, 2005; 
Prosecutor v. Jelisic, Case No. IT-95-10 (Trial Chamber), December 14, 1999, para. 34 (Common Article 3 protects 
“[p]ersons taking no active part in the hostilities” including persons “placed hors de combat by sickness, wounds, 
detention, or any other cause.”); Prosecutor v. Blaskic, Case No. IT-95-14 (Trial Chamber), March 3, 2000, para. 180 
(“Civilians within the meaning of Article 3 are persons who are not, or no longer, members of the armed forces. 
Civilian property covers any property that could not be legitimately considered a military objective.”).  
76 Prosecutor v. Kvocka et al. (The elements of the “murder” offense vary depending on whether it is charged as a 
violation of the laws and customs of war or a crime against humanity). 
77 See KNUT DÖRMANN, ELEMENTS OF WAR CRIMES UNDER THE ROME STATUTE OF THE INTERNATIONAL CRIMINAL 
COURT 383 (2003) (describing elements common to crimes under article 8(2)(c) of the Rome Statute of the International 
Criminal Court). 
78 See id. at 476 (describing elements of “killing or wounding treacherously a combatant adversary” under article 
8(2)(e)(ix) of the Rome Statute). 
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While one of the Guantánamo military commission judges found, without elaborating on what 
“murder in violation of the law of war” entails, that Congress could reasonably conclude that it 
constitutes a common law violation of the law of war,79 another read the crime to consist of two 
elements: “the [attempted] killings ...were committed by an unlawful enemy combatant AND (2) 
that the method, manner or circumstances used violated the law of war.”80 There is historical 
support for the view that the offense pertains to means and methods of killing, but the notion that 
the unlawfulness element may be satisfied by proof that the offender is an “unlawful combatant” 
is not well supported. Military commissions were used during the U.S. Civil War to try the charge 
of “murder in violation of the law of war,” but this charge apparently applied to privileged 
belligerents who committed murder perfidiously or who killed prisoners of war,81 while 
unprivileged belligerents were charged simply with murder.82 The charge of “murder, in violation 
of the laws of war” was occasionally brought against Filipino natives during the Philippine 
Insurrection, generally involving the killing of unarmed civilians or prisoners.83 However, it is not 
easy to discern why some cases were charged as “murder” while others had added the phrase “in 
violation of the laws of war.”84 Sometimes the distinction appears to turn on the status of the 
victim, other times the determining factor seems to be the status of the perpetrator or more 
precisely, the authority under which the hostile act was carried out. Murder qualified by reference 
to the law of war was charged most frequently against those whose legitimacy as combatants was 
not challenged. In one case in which insurgents killed U.S. soldiers during a firefight, the 
                                                 
79 United States v. Khadr, Ruling on Defense Motion to Dismiss Charge One for Failure to State an Offense and for 
Lack of Subject Matter Jurisdiction (D-008) (April 21, 2008).  
80 United States v. Jawad, Ruling on Defense Motion to Dismiss—Lack of Subject Matter Jurisdiction (D-007) 
(September 24, 2008) (rejecting prosecution argument that ‘murder in violation of the law of war’ is identical to the 
charge of ‘murder by an unprivileged belligerent’). Two other judges reached similar conclusions. See U.S. Congress, 
House Committee on the Judiciary, Subcommittee on the Constitution, Civil Rights, and Civil Liberties, Proposals for 
Reform of the Military Commissions System, 111th Cong., 1st sess., June 30, 2006 (prepared testimony of former 
Guantánamo military defense attorney Maj. David Frakt, USAFR). 
81 See CHARLES ROSCOE HOWLAND, A DIGEST OF OPINIONS OF THE JUDGE ADVOCATES GENERAL OF THE ARMY, 1071-72 
(1912); id. at 1072 & note 1 (noting that 1873 military commission trying Modoc Indians for ‘a treacherous killing of 
an enemy during a truce’ charged the offense as “murder in violation of the law of war”); Trial of Henry Wirz, General 
Court Martial Order (G.C.M.O.) no. 607, November 6, 1865, reprinted in [Series II] 8 OFFICIAL RECORDS OF THE 
UNION AND CONFEDERATE ARMIES 784, 786 (1899) (Confederate officer charged for “murder in violation of the laws 
and customs of war” for shooting death of prisoner of war); Trial of James W. Duncan, G.C.M.O. 153, June 8, 1866 
reprinted in [Series II] 8 OFFICIAL RECORDS 926 (1899) (employee “in the rebel military service” charged with “murder 
in violation of the laws of war” for beating death of prisoner). 
82 See cases listed supra note 72; Trial of Frank B. Gurley, G.C.M.O. no. 505, September 6, 1865, reprinted in [Series 
II] 8 OFFICIAL RECORDS 741 (Judge Advocate General approved conviction of “citizen” not “lawfully in the services of 
the so-called Confederate States” for murder of U.S. general officer where accused could not provide proof of 
Confederate commission). Gurley was, despite his death sentence, exchanged as a prisoner of war, to the consternation 
of the Judge Advocate General, see id. at 742. Military commission trials of persons not in the service of the 
Confederate government, including those tried for guerrilla activities in during periods of martial law, were later held 
invalid by civil courts on the basis that civil courts were open when the trials took place. In re Murphy, 17 F. Cas. 1030 
(1867); District Court v. Commandant of Fort Delaware, 25 F. Cas. 590 (1866); In re Egan, 8 F. Cas. 367 (1866); 
Thompson v. Wharton, 70 Ky. 563 (Ky. 1870). Military detention of such persons without trial was also held to be 
unlawful. Johnson v. Jones, 44 Ill. 142 (Ill. 1867); Carver v. Jones, 45 Ill. 334 (Ill. 1867). 
83 For military commission trials against Filipinos for cruelty to U.S. soldiers, see U.S. Congress, Senate Committee on 
the Philippines, Affairs in the Philippine Islands, 57th Cong., 1st sess., April 10, 1902, S.Hrg. 57-331, 1340 et seq. 
(Washington: GPO, 1902). Sometimes the charge was listed as “murdering prisoners in violation of the laws of war” or 
similar language.  
84 In one case in which an accused was tried for both types of murder, the difference appears to be that simple murder 
applied to the killing of Filipino scouts and other officials in the employ of the United States (outside of ordinary 
combat), while the murder of civilians suspected to be spies was “in violation of the laws of war.” Id. at 1249-50.  
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conviction for murder in the violation of the laws of war was overturned in part on the basis that 
“[t]he killing of the deceased soldiers in an engagement with a regular detachment of the public 
enemy is not murder but a natural consequence incidental to a state of war.”85  
Similarly, defining as a war crime the “material support for terrorism”86 does not appear to be 
supported by historical precedent. The military judge in the Hamdan military commission case 
deferred to Congress’s determination in the MCA that “material support for terrorism” describes a 
traditional offense against the law of war, citing Civil War precedents for trying crimes such as 
cooperating with guerrillas or “guerrilla-marauders.”87 The Court of Military Commission 
Review affirmed,88 but was overruled by the U.S. Court of Appeals for the D.C. Circuit.89 The 
issue may be headed to the Supreme Court. 
The Supreme Court’s decision in Ex parte Milligan90 may have limited the extent to which such 
crimes may be tried by military commissions where martial law has not been established, and 
may also call into question whether such crimes are properly considered war crimes or should be 
treated as ordinary crimes triable by military commissions when necessity demands it.91 Charges 
related to aiding guerrillas were typically accompanied by a specification stating that the accused 
was a citizen and owed allegiance to the United States, but not ordinarily stating that the activity 
violated the law of war,92 suggesting that the offense was a violation of martial law rather than the 
international law of war applicable to belligerents. 
                                                 
85 Id. at 1362 (reprinting G.O. 171, July 13, 1901). It was also noted that the accused had not himself fired a weapon. 
The judge advocate went on to note that under the circumstances, conspiracy to commit the crime (murder, in violation 
of the laws of war) would not be warranted, either, but that the accused might have been found guilty of being a “war 
traitor” to the military government. In another case, a sentence for “murder” of a town official as well as “violations of 
the laws of war” for attacking a U.S. garrison was disapproved because “[t]he accused was a regularly commissioned 
officer of the hostile army engaged in a contemplated attack upon the enemy under the orders of his officers.” Id. at 
1231-32 (reprinting G.O., 197, July 27, 1901). That the participants had covered their uniforms and weapons during the 
operation was excused as a “ruse de guerre,” and the killing of the official justified by his resistance to being taken 
prisoner. Id.  
86 10 U.S.C. §950t(b)(25)(incorporating the definition found in 18 U.S.C. §2339A). 
87 United States v. Hamdan, Ruling on Motion to Dismiss (Ex Post Facto) D-012 (July 14, 2008), available at 
http://howappealing.law.com/HamdanRulingMotionsToDismissExPostFacto.pdf 
88 Hamdan v. United States, 801 F. Supp. 2d 1247 (USCMCR 2011). 
89 Hamdan v. United States, 696 F.3d 1238 (D.C. Cir. 2012). 
90 71 U.S. (4 Wall.) 2 (1866). Lambdin Milligan and others were tried by military commission for conspiracy and 
“violations of the law of war,” among other offenses, for participating in a secret armed organization opposed to the 
Union’s efforts to prevent the secession of southern states and planning to use force in aid of the rebellion. G.O. 27, HQ 
District of Indiana (May 9, 1865), reprinted in [Series II], vol. 8 OFFICIAL RECORDS 543 - 49. The Supreme Court, 
while not disputing military commission jurisdiction over violations of the “laws and usages of war,” stated those laws 
and usages “... can never be applied to citizens in states which have upheld the authority of the government, and where 
the courts are open and their process unobstructed.” 71 U.S. at 121. By treating the case as one related to the legitimacy 
of martial law, the Court implicitly rejected the government’s position that such activities, when committed by 
unprivileged belligerents, were amenable to military jurisdiction as violations of the law of war. Compare id. with Ex 
parte Quirin, 317 U.S. 1 (1941) (military commission jurisdiction appropriate for German saboteurs who breached U.S. 
coastal defenses despite absence of martial law).  
91 See cases listed supra note 82. 
92 G.O. 4, HQ Dept. of the Missouri (January 16, 1864) 7 (accused was convicted and banished to Iowa on a charge of 
“harboring and feeding guerrillas”); G.O. 164, HQ, Dept. of the Missouri 8 (September 8, 1864) (conviction of 
“harboring and feeding guerrillas” as well as “giving aid and comfort to rebel enemies ... ”); G.O. 236, HQ, Dept. of the 
Missouri 8 (December 26, 1864) (“harboring and feeding guerrillas”). 
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Many persons were tried by military commissions during the Philippine Insurrection for 
consorting with insurgents or other armed outlaws, but only after the commanding general issued 
a proclamation to the public explaining its obligation under the law of military occupation (a 
subset of the law of war analogous to martial law) to refrain from such activity.93 In any event, the 
Obama Administration earlier expressed misgivings as to whether the crime of “material support 
for terrorism” amounts to an ex post facto law, and recommended the offense be eliminated from 
the MCA.94 All but one of the detainees against whom charges had been filed prior to 2011 had at 
least one count of “material support for terrorism” among them,95 although in most cases the 
allegations underlying the charge appeared under other charges as well. Congress chose not to 
eliminate the material support charge when it amended the MCA in 2009. Newer cases have 
avoided the charge, although one case appears to charge equivalent conduct as “aiding the 
enemy” under UCMJ article 904.96 
Temporal and Spatial Jurisdiction 
The law of war has traditionally applied within the territorial and temporal boundaries of an 
armed conflict between at least two belligerents.97 It traditionally has not been applied to conduct 
occurring on the territory of neutral states or on territory not under the control of a belligerent, to 
conduct that preceded the outbreak of hostilities, or to conduct during hostilities that do not 
amount to an armed conflict. Unlike the conflict in Afghanistan, the conflict related to the 
September 11 attacks does not have clear boundaries in time or space,98 nor is it entirely clear in 
all cases who the belligerents are. 
The broad reach of President Bush’s M.O. to encompass conduct and persons customarily subject 
to ordinary criminal law evoked criticism that the claimed jurisdiction of the military 
                                                 
93 U.S. Congress, Senate Committee on the Philippines, Affairs in the Philippine Islands, 57th Cong., 1st sess., April 10, 
1902, S.Hrg. 57-331 (Washington: GPO, 1902), pp. 1943-1946 (Statement explaining martial law and reprint of 
proclamation by Gen. Arthur McArthur of December 10, 1900). It appears that the terms “martial law” and the “law of 
hostile [or belligerent] occupation” were used interchangeably. 
94 U.S. Congress, Senate Committee on Armed Services, Military Commissions, 111th Cong., 1st sess., July 7, 2009 
(Submitted statement of David Kris, Assistant Attorney General)(“[T]here are serious questions as to whether material 
support for terrorism or terrorist groups is a traditional violation of the law of war. The President has made clear that 
military commissions are to be used only to prosecute law of war offenses. Although identifying traditional law of war 
offenses can be a difficult legal and historical exercise, our experts believe that there is a significant risk that appellate 
courts will ultimately conclude that material support for terrorism is not a traditional law of war offense, thereby 
reversing hard-won convictions and leading to questions about the system’s legitimacy.”) 
95 Mohammed Jawad was originally charged with attempted murder in violation of the law of war and attempt to cause 
serious bodily injury. Both charges were later dropped. Charge sheets are available at http://www.mc.mil. 
96 Almed al Darbi was charged with aiding the enemy, among other offenses, in connection with terrorist attacks 
against shipping vessels. Abd al-Rahim Al-Nashiri is also charged with for offenses related to the bombing of the USS 
Cole in the Gulf of Aden and another attack on a vessel, but is not charged with aiding the enemy. 
97 See WINTHROP, supra footnote 30, at 773 (the law of war “prescribes the rights and obligations of belligerents, or ... 
define[s] the status and relations not only of enemies—whether or not in arms—but also of persons under military 
government or martial law and persons simply resident or being upon the theatre of war, and which authorizes their 
trial and punishment when offenders”); id at 836 (military commissions have valid jurisdiction only in theater of war or 
territory under martial law or military government).  
98 Some may argue that no war has a specific deadline and that all conflicts are in a sense indefinite. In traditional 
armed conflicts, however, it has been relatively easy to identify when hostilities have ended; for example, upon the 
surrender or annihilation of one party, an annexation of territory under dispute, an armistice or peace treaty, or when 
one party to the conflict unilaterally withdraws its forces. See GERHARD VON GLAHN, LAW AMONG NATIONS 722-730 
(6th ed. 1992). 
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commissions exceeded the customary law of armed conflict, although DOD regulation purported 
to restate customary law.99 The MCA provides jurisdiction to military commissions over covered 
offenses “when committed by an alien unprivileged enemy belligerent before, on, or after 
September 11, 2001.”100 Further, the MCA states that it codifies offenses “that have traditionally 
been triable by military commission” and establishes no “new crimes that did not exist before 
[its] enactment”; and that therefore it “does not preclude trial for offenses that occurred before the 
date of the enactment of this subchapter, as so amended.”101 Whether, in fact, the offenses were 
established under the law of war prior to the enactment of the MCA has already been the subject 
of two successful challenges by defendants. 
In enacting the MCA, Congress seems to have provided the necessary statutory definitions of 
criminal offenses to overcome previous objections with respect to subject matter jurisdiction of 
military commissions. However, questions may still arise with respect to the necessity for conduct 
to occur in the context of hostilities in order to be triable by military commission. In 2008, the 
military judge in the Hamdan case concluded that a nexus with hostilities was required, holding 
that a charge of “[m]embership in a conspiracy that planned and carried out the attacks of 
September 11th, 2001 will be deemed to be in violation of the law of war; membership in a 
conspiracy that planned or carried out other attacks long before that date and unrelated to 
hostilities will not.”102 
Composition and Powers 
The MCA provides for a qualified military judge to preside over panels of at least five military 
officers, except in the cases in which the death penalty is sought, in which case panels are to 
consist of twelve members unless that number are not reasonably available, in which case the 
minimum is nine panel members.103 Procedures for assigning military judges as well as the 
particulars regarding the duties they are to perform are left to the Secretary of Defense to 
prescribe, except that the military judge may not be permitted to consult with members of the 
panel outside of the presence of the accused and counsel except as prescribed in 10 U.S.C. 
Section 949d.104 The military judge has the authority to decide matters related to the admissibility 
of evidence, including the treatment of classified information, but has no authority to compel the 
government to produce classified information. 
The MCA empowers military commissions to maintain decorum during proceedings. Previously, 
under the DOD rules prior to enactment of the 2006 MCA, the presiding officer was authorized 
“to act upon any contempt or breach of Commission rules and procedures,” including disciplining 
any individual who violates any “laws, rules, regulations, or other orders” applicable to the 
commission, as the presiding officer saw fit. Presumably this power was to include not only 
military and civilian attorneys but also any witnesses who had been summoned under order of the 
                                                 
99 See Leila Nadya Sadat, Terrorism and the Rule of Law, 3 WASH. U. GLOBAL STUD. L. REV. 135, 146 (2004) (noting 
possibly advantageous domestic aspects of treating terrorist attacks as war crimes, but identifying possible pitfalls of 
creating a new international legal regime). 
100 10 U.S.C. §948d. 
101 10 U.S.C. §950p(d). 
102 United States v. Hamdan, Ruling on Motion to Dismiss (Res Judicata) (April 2, 2008). 
103 10 U.S.C. §949m. 
104 10 U.S.C. §948j. 
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Secretary of Defense.105 The MCA, 10 U.S.C. §950t, authorizes the military commissions to 
“punish for contempt any person who uses any menacing word, sign, or gesture in its presence, or 
who disturbs its proceedings by any riot or disorder.” It is unclear whether this section is meant to 
expand the jurisdiction of military commissions to cover non-enemy unprivileged belligerent 
witnesses or civilian observers, but the M.M.C. expressly provides for jurisdiction over all 
persons, including civilians, and permits military judges to sentence those convicted with both 
fines and terms of confinement.106 In the case of military commissions established under the 
UCMJ, there is statutory authority for military commissions to punish contempt with a fine of 
$100, confinement for up to 30 days, or both.107 Although the MCA does not set limits on 
punishment for contempt, the M.M.C. 2012 limits confinement to 30 days and fines to $1000.108 
The MCA provides that military commissions have the same power as a general court-martial to 
compel witnesses to appear in a manner “similar to that which courts of the United States having 
criminal jurisdiction may lawfully issue.”109 However, rather than providing that the trial counsel 
and the defense are to have equal opportunity to obtain witnesses and evidence, as is the case in 
general courts-martial, the MCA provides the defense a “reasonable opportunity” to obtain 
witnesses and evidence, in a manner comparable “to the opportunity available to a criminal 
defendant” in an article III court.110 The M.M.C. provides the trial counsel with responsibility for 
producing witnesses requested by the defense, unless trial counsel determines the witness’s 
testimony is not required or is protected, but the defense counsel may appeal the determination to 
the convening authority or, after referral, the military judge.111 
Under article 47 of the UCMJ, a duly subpoenaed witness who is not subject to the UCMJ and 
who refuses to appear before a military commission may be prosecuted in federal court.112 
Presumably, this article could be used to prosecute civilians residing in U.S. territory who refuse 
to comply with a subpoena issued under the MCA. The M.M.C. provides the military judge or 
any person designated to take evidence authority to issue a subpoena to compel the presence of a 
witness or the production of documents. As is the case with general courts-martial, the military 
judge may issue a warrant of attachment to compel the presence of a witness who refuses to 
                                                 
105 See M.C.O. No. 1 §3(C) (asserting jurisdiction over participants in commission proceedings “as necessary to 
preserve the integrity and order of the proceedings”). 
106 Rule for Military Commissions (R.M.C.) 809, M.M.C. 2012 supra footnote 70, at II-78. 
107 See 10 U.S.C. §848. This section is made inapplicable to military commissions in chapter 47A by MCA 2006 §4  
108 R.M.C. 809, M.M.C. 2012, supra footnote 70, at II-79. 
109 10 U.S.C. §949j. P.L. 111-84 §1807 expresses the sense of Congress that  
(1) the fairness and effectiveness of the military commissions system under chapter 47A of title 10, 
United States Code (as amended by section 1802), will depend to a significant degree on the 
adequacy of defense counsel and associated resources for individuals accused, particularly in the 
case of capital cases, under such chapter 47A; and 
(2) defense counsel in military commission cases, particularly in capital cases, under such chapter 
47A of title 10, United States Code (as so amended), should be fully resourced as provided in such 
chapter 47A. 
110 10 U.S.C. §949j. 
111 R.M.C. 703.  
112 See 10 U.S.C. §847. It is unclear how witnesses are “duly subpoenaed” for military commissions established under 
the UCMJ. 10 U.S.C. §846 empowers the president of a court-martial to compel witnesses to appear and testify and to 
compel production of evidence, but this statutory authority does not explicitly apply to military commissions. The 
subpoena power extends to “any part of the United States, or the Territories, Commonwealth and possessions.” 
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comply with a subpoena.113 Subpoena authority under the UCMJ may not be used to compel a 
civilian witness to travel abroad in order to provide testimony,114 so the corresponding authority 
under the MCA may be insufficient to compel civilian witnesses to travel to Cuba. Testimony by 
video transmission may be permitted in such cases.115 
One of the perceived shortcomings of President Bush’s M.O. had to do with the problem of 
command influence over commission personnel. M.C.O. No. 1 provided for a “full and fair trial,” 
but contained few specific safeguards to address the issue of impartiality. The President or his 
designee were empowered to decide which charges to press; to select the members of the panel, 
the prosecution and the defense counsel, and the members of the review panel; and to approve 
and implement the final outcome. The President or his designees had the authority to write 
procedural rules, interpret them, enforce them, and amend them. Justice Kennedy remarked in his 
concurring opinion in Hamdan v. Rumsfed that the concentration of authority in the Appointing 
Authority was a significant departure from the structural safeguards Congress has built into the 
military justice system.116  
The MCA, by providing requirements for the procedural rules to guard against command 
influence, may alleviate some of these concerns. In particular, the MCA prohibits the unlawful 
influence of military commissions and provides that neither the military commission members 
nor military counsel may have adverse actions taken against them in performance reviews. Many 
of the procedural rules are left to the discretion of the Secretary of Defense or his designee, more 
so than is the case under the UCMJ. Rule 104 of the Rules for Military Commissions (R.M.C.) 
prohibits command influence in terms similar to those in the Manual for Courts-Martial, except 
that they apply more broadly to “all persons” rather than only to “all persons subject to the 
[UCMJ].”  
On the other hand, it has been argued that the multiple roles assigned to the convening authority, 
that is, the DOD official who decides which charges to bring, allocates resources among the 
parties, and then approves or disapproves the findings of the military commission, create an 
inherent risk of unfairness (or the perception of unfairness).117 While the convening authority for 
courts-martial also plays multiple roles, these functions serve as commanders’ tools for enforcing 
discipline among subordinates, a context that arguably differs in important ways from bringing 
criminal cases against alleged enemies.118 Improper influence by the legal advisor to the 
convening authority has been alleged at a few military commission proceedings, prompting 
military judges to issue orders in some cases granting relief.119 Executive branch control over who 
serves as military judges has also led to charges of unfairness.120  
                                                 
113 R.M.C. 703; R.C.M. 703. 
114 DAVID SCHLEUTER, MILITARY CRIMINAL JUSTICE: PRACTICE AND PROCEDURE §11-2(D)(2) (5th ed. 1999); United 
States v. Bennett, 12 M.J. 463 (C.M.A. 1982). 
115 Mil. Comm. R. Evid. 611(d). 
116 Hamdan, 647-51 (Kennedy, J. concurring). 
117 Gregory S. McNeal, Beyond Guantánamo, Obstacles and Options, 103 NW. U. L. REV. COLLOQUY 29, 32 (2008) 
(blaming “conflicting statutory provisions” for perceived undue influence at military commissions under the MCA). 
118 See id. at 34; U.S. Congress, House Committee on the Judiciary, Subcommittee on the Constitution, Civil Rights, 
and Civil Liberties, Proposals for Reform of the Military Commissions System, 111th Cong., 1st Sess., July 30, 2009 
(statement of Peter R. Masciola, USAFG, Chief Defense Counsel Office of Military Commissions-Defense 
Washington, DC). 
119 United States v. Hamdan, Ruling on Motion to Dismiss (Unlawful Influence) (D-026) (May 9, 2008) (Ordering 
(continued...) 
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Procedures Accorded the Accused 
The MCA lists a minimum set of rights to be afforded the accused in any trial, and provides the 
accused an opportunity to appeal adverse verdicts to the United States Court of Appeals for the 
District of Columbia Circuit, but only “with respect to the findings and sentence as approved by 
the convening authority and as affirmed or set aside as incorrect in law by the United States Court 
of Military Commission Review.” The circuit court is empowered to take action “only with 
respect to matters of law, including the sufficiency of the evidence to support the verdict.”121 The 
MCA provides that the accused is to be informed of the charges as soon as practicable after the 
charges and specifications are referred for trial.122 The accused is to be presumed innocent until 
determined to be guilty. The presumption of innocence and the right against self-incrimination are 
to result in an entered plea of “Not Guilty” if the accused refuses to enter a plea or enters a 
“Guilty” plea that is determined to be involuntary or ill informed.123 The accused has the right not 
to testify at trial and to have the opportunity to present evidence and cross-examine witnesses for 
the prosecution.124 
Open Hearing 
Because the public, and not just the accused, has a constitutionally protected interest in public 
trials, the extent to which trials by military commission are open to the press and public may be 
subject to challenge by media representatives.125 The First Amendment right of public access 
extends to trials by court-martial,126 but is not absolute. It does not impose on the government a 
duty “to accord the press special access to information not shared by members of the public 
generally.”127 The reporters’ right to gather information does not include an absolute right to gain 
                                                                  
(...continued) 
substitute legal advisor be appointed for reviewing the case); United States v. Jawad, Ruling on Motion to Dismiss—
Unlawful Influence (D-004) (August 14, 2008) (finding the Legal Advisor’s public expression of support for the 
military commission process and alignment with the prosecution to have “compromised the objectivity necessary to 
dispassionately and fairly evaluate the evidence and prepare the post-trial recommendation,” consequently 
disqualifying the legal advisor from carrying out post-trial responsibilities in the case); United States v. al Darbi, 
Ruling on Defense Motion to Dismiss (D-011) (October 2, 2008) (denying as moot request for relief, while noting 
activities of previous Legal Advisor may have compromised objectivity in necessary to fairly evaluate evidence and 
prepare post-trial recommendation). 
120 United States v. Khadr, Ruling on Defense Motion to Dismiss (D-076) (August 15, 2008) (denying relief where 
military judge was replaced after expiration of recall to active duty). 
121 10 U.S.C. §950g. Previously, appeals could challenge only whether “the final decision was consistent with the 
standards and procedures specified” in the MCA, and “to the extent applicable, the Constitution and the laws of the 
United States.” 
122 10 U.S.C. §948q. 
123 10 U.S.C. §949i. 
124 10 U.S.C. §949a(b). 
125 See Globe Newspaper Co. v. Super. Ct., 457 U.S. 596, 602 (1982) (newspaper had standing to challenge court order 
closing portions of criminal trial). The Court of Appeals for the Armed Forces has ruled that it has no jurisdiction to 
hear a challenge by media representatives to closures in a court-martial case. Center for Constitutional Rights v. United 
States, 72 M.J. 126 (C.A.A.F. 2013). 
126 United States v. Hershey, 20 M.J. 433 (C.M.A.1985), cert. denied, 474 U.S. 1062 (1986); United States v. Grunden, 
2 M.J. 116 (C.M.A.1977). The press has standing to challenge closure of military justice proceedings. ABC, Inc. v. 
Powell, 47 M.J. 363, 365 (1997). 
127 Pell v. Procunier, 417 U.S. 817, 822-24 (1974). 
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access to areas not open to the public.128 In general, trials may be closed only where the following 
test is met: the party seeking closure demonstrates an overriding interest that is likely to be 
prejudiced; the closure is narrowly tailored to protect that interest; the trial court has considered 
reasonable alternatives to closure; and the trial court makes adequate findings to support the 
closure.129 
The MCA provides that the military commission judge may close portions of a trial only to 
protect information from disclosure where such disclosure could reasonably be expected to cause 
damage to the national security, such as information about intelligence or law enforcement 
sources, methods, or activities; or to ensure the physical safety of individuals.130 The information 
to be protected from disclosure does not necessarily have to be classified. To the extent that the 
exclusion of the press and public is based on the discretion of the military judge without 
consideration of the constitutional requirements relative to the specific exigencies of the case at 
trial, the procedures may implicate the First Amendment rights of the press and public. The 
M.M.C. provides, in Rule 806, that the military judge may close proceedings only to protect 
information designated for such protection by a government agency or to secure the physical 
safety of individuals. However, the rule also provides that “in order to maintain the dignity and 
decorum of the proceedings or for other good cause, the military judge may reasonably limit the 
number of spectators in, and the means of access to, the courtroom, and exclude specific persons 
from the courtroom.” Such limitations must be supported by written findings.  
One method military judges have adopted to protect classified information without closing a 
hearing to the public is to employ a time-delay on the audio feed of the proceedings to the public 
in the gallery in order to permit the judge or other authorized person to turn off the audio in the 
event classified information has been or is about to be disclosed.131 The measure was said to be 
necessary because the statements of the accused are presumptively classified. If the switch is 
activated, the judge was to order a halt to the proceedings to evaluate the nature of the 
information or to permit the prosecution to assert a national security privilege. 
The MCA of 2009 inserted a new subtitle V to provide procedures for handling classified or 
sensitive information, including the closure of evidentiary hearings when such information is to 
be discussed, the sealing of records, and the issuance of protective orders. It states that the trial 
counsel may “object to any question or line of inquiry that may require the witness to disclose 
classified information not previously found to be admissible” during testimony.132 In such 
circumstances, the military judge is to “take such suitable action to determine whether the 
response is admissible as will safeguard against the compromise of any classified information,” 
which may leave room for the use of time delay devices as described above, though the measure 
isn’t expressly authorized. 
                                                 
128 See Juan R. Torruella, On the Slippery Slopes of Afghanistan: Military Commissions and the Exercise of 
Presidential Power, 4 U. PA. J. CONST. L. 648, 718 (2002) (noting that proceedings held at the Guantánamo Bay Naval 
Station may be de facto closed due to the physical isolation of the facility). 
129 See Press-Enterprise Co. v. Superior Court of California, 464 U.S. 501 (1984). 
130 10 U.S.C. §949d(c). 
131 E.g., United States v. Hamdan, Protective Order #3 (June 4, 2008). 
132 10 U.S.C. §949p-7. 
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The American Civil Liberties Union (ACLU) and various media groups filed a petition for 
mandamus with the Court of Military Commission Review (CMCR)133 challenging the scope of 
the protective order issued in the case against the five alleged September 11 conspirators on the 
basis of its perceived inconsistency with the First Amendment. The CMCR denied the writ 
without deciding whether it had jurisdiction to issue the writ, finding the controversy to be unripe 
for decision.134 
Right to Be Present 
Under UCMJ art. 39,135 the accused at a court-martial has the right to be present at all 
proceedings other than the deliberation of the members. Under the DOD rules for military 
commissions prior to the MCA, the accused or the accused’s civilian attorney could be precluded 
from attending portions of the trial for reasons involving national security, but a detailed 
(assigned) defense counsel was to be present for all hearings.136 The MCA does not provide for 
the exclusion of the accused from portions of his trial, and does not allow classified information 
to be presented to panel members that is not disclosed to the accused. The accused may be 
excluded from trial proceedings (other than panel deliberations) by the military judge only upon a 
determination that the accused persists in disruptive or dangerous conduct.137 However, the 
accused may be excluded from in camera considerations regarding the treatment of classified 
information.138 The accused may not waive the right to be present at his trial, but may forfeit it 
through disruptive behavior or refusal to attend proceedings.139 
Right to Counsel 
As is the case in military courts-martial, an accused before a military commission under the MCA 
has the right to have military counsel assigned free of charge. The right to counsel attaches much 
earlier in the regular military justice system, where the accused has a right to request an attorney 
prior to being interrogated about conduct relating to the charges contemplated, than under the 
MCA. Under the MCA, at least one qualifying military defense counsel is to be detailed “as soon 
as practicable.”140 The accused may also hire a civilian attorney who meets specific qualifications 
and agrees to comply with all applicable rules. If civilian counsel is hired, the detailed military 
                                                 
133 For more information about the Court of Military Commission Review (CMCR), see infra at p. 31. 
134 ACLU v. United States, CMCR Case No. 13-003 (March 27, 2013), available at http://www.mc.mil/Portals/0/pdfs/
ACLU13-003/13-
003%20ACLU%20Writ%20%28Ordering%20Dismissal%29%20%28J.%20Silliman%20Concur%29%20%28Mar%20
27%202013%29.pdf. 
135 10 U.S.C. §839. 
136 That the accused could be excluded from portions of own trial and prevented from learning what evidence was 
introduced was among the factors that the Hamdan Court found most troubling about the military commissions 
established pursuant to President Bush’s M.O. 548 U.S. at 614. 
137 10 U.S.C. §949d(d). 
138 United States v. Khadr, Ruling on Defense Motion for Appropriate Relief (D-015) (February 21, 2008). 
139 R.M.C. 804 (discussion). 
140 10 U.S.C. §948k. The MCA 2006 required only that defense counsel be detailed “as soon as practicable after the 
swearing of charges against the accused.” 
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counsel serves as associate counsel.141 Unlike the previous DOD rules, the MCA provides that the 
accused has the right to self-representation.142 
Previous DOD rules provided that defense counsel was to be assigned free of cost once charges 
were referred, but permitted the accused to request another Judge Advocate General (JAG) officer 
to be assigned as a replacement if available in accordance with any applicable instructions or 
supplementary regulations that might later be issued.143 The MCA, as amended, incorporates this 
measure, providing the accused an opportunity to request a specific JAG officer to act as counsel, 
if the requested officer is reasonably available.144 DOD regulations provide that the accused may 
request a specific military attorney from the defense team at the beginning of the proceedings, 
and may request a replacement counsel from the Chief Defense Counsel if he believes his 
detailed counsel has been ineffective or if he is otherwise materially dissatisfied with his assigned 
counsel.145 The M.M.C. provides that, in the event the accused elects to represent himself, the 
detailed counsel shall serve as “standby counsel,”146 and the military judge may require that such 
defense counsel remain present during proceedings.147  
The MCA requires civilian attorneys defending an accused before military commission to meet 
the same strict qualifications that applied under DOD rules.148 A civilian attorney must be a U.S. 
citizen with at least a SECRET clearance with membership in any state or territorial bar and no 
disciplinary record.149 The MCA does not set forth in any detail what rules might be established to 
govern the conduct of civilian counsel. Under the last-issued regulation, the Chief Defense 
Counsel has the responsibility of determining the eligibility of civilian defense counsel, and may 
reconsider the determination based on “subsequently discovered information indicating material 
nondisclosure or misrepresentation in the application, or material violation of obligations of the 
civilian defense counsel, or other good cause.”150 Alternatively, the Chief Defense Counsel may 
refer the matter to either the convening authority or the DOD Deputy General Counsel (Personnel 
and Health Policy), who may revoke or suspend the qualification of any member of the civilian 
defense counsel pool. 
The MCA does not address the monitoring of communications between the accused and his 
attorney, and does not provide for an attorney-client privilege. Rule 502 of the Military 
Commission Rules of Evidence (Mil. Comm. R. Evid.) provides for substantially the same 
                                                 
141 10 U.S.C. §949c(b); R.M.C. 804. 
142 10 U.S.C. §949a(b)(2)(D). The military judge can revoke the accused’s right to self-representation if the accused 
fails to conduct his defense within the relevant rules and decorum applicable in military commission trials. Prior to the 
2006 MCA, M.C.I. No. 4 required detailed defense counsel to “defend the accused zealously within the bounds of the 
law ... notwithstanding any intention expressed by the accused to represent himself.” M.C.I. No. 4 §3(C). 
143 M.C.O. No. 1 §4(C).  
144 10 U.S.C. §949c(b)(2). 
145 Regulation for Trial by Military Commissions, Para. 9-2. The accused may request a specific JAG officer from the 
cadre of officers assigned to the Defense Counsel’s Office, but does not have a right to choose. R.C.M. 506 was 
amended to provide the accused an opportunity to choose military defense counsel from among military counsel 
assigned to the Office of Military Commissions as defense counsel.  
146 R.M.C. 501. 
147 R.M.C. 506(d). 
148 10 U.S.C. §949c(b). 
149 10 U.S.C. §949c, R.M.C. 502(d)(3). 
150 Regulation for Trial by Military Commissions 2011, Para. 9-5(C). 
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lawyer-client privilege that applies in courts-martial.151 With respect to the monitoring of 
attorney-client communications, the previous DOD rules for military commissions initially 
provided that civilian counsel were required to agree that communications with the client were 
subject to monitoring. That requirement was later modified to require prior notification and to 
permit the attorney to notify the client when monitoring is to occur.152 Although the government 
was not permitted to use information against the accused at trial, some argued that the absence of 
the normal attorney-client privilege could impede communications between them, possibly 
decreasing the effectiveness of counsel. Civilian attorneys were bound to inform the military 
counsel upon learning of information about a pending crime that could lead to “death, substantial 
bodily harm, or a significant impairment of national security.”153 The required agreement under 
the current regulations imposes a similar duty to inform, but does not mention monitoring of 
communications.154 The revelation that the rooms where attorneys are permitted to meet with 
clients were fitted with hidden listening devices has caused some concern among defense 
attorneys at military commission proceedings.155 
Evidentiary Matters 
The Sixth Amendment to the U.S. Constitution guarantees that those accused in criminal 
prosecutions have the right to be “confronted with the witnesses against [them]” and to have 
“compulsory process for obtaining witnesses in [their] favor.”156 The Supreme Court has held that 
“[t]he central concern of the Confrontation Clause is to ensure the reliability of the evidence 
against a criminal defendant by subjecting it to rigorous testing in the context of an adversary 
proceeding before the trier of fact.”157 In courts-martial, the Military Rules of Evidence (Mil. R. 
Evid.)158 provide that “[a]ll relevant evidence is admissible, except as otherwise provided by the 
Constitution of the United States [and other applicable statutes, regulations and rules].”159 
Relevant evidence is excluded if its probative value is outweighed by other factors.160 The 
                                                 
151 Mil. R. Evid. 502. 
152 See M.C.O. No. 3, “Special Administrative Measures for Certain Communications Subject to Monitoring.” The 
required affidavit and agreement annexed to M.C.I. No. 3 was modified to eliminate the following language: 
I understand that my communications with my client, even if traditionally covered by the attorney-
client privilege, may be subject to monitoring or review by government officials, using any 
available means, for security and intelligence purposes. I understand that any such monitoring will 
only take place in limited circumstances when approved by proper authority, and that any evidence 
or information derived from such communications will not be used in proceedings against the 
Accused who made or received the relevant communication. 
153 M.C.I. No. 5, Annex B §II(J). 
154 Regulation for Trial by Military Commissions 2011, Figure  9.2. Affidavit and Agreement by Civilian Defense 
Counsel, II(J). 
155 See Carol Rosenberg, FBI hid microphones in Guantánamo, but no one listened, prison commander testifies, MIAMI 
HERALD, February 13, 2013, available at http://www.miamiherald.com/2013/02/13/3232992/fbi-hid-microphones-in-
guantanamo.html. 
156 U.S. CONST. Amdt. VI applies in courts-martial. E.g. United States v. Scheffer, 523 U.S. 303 (1998). 
157 Maryland v. Craig, 497 U.S. 836, 845 (1990). 
158 The Military Rules of Evidence (Mil. R. Evid.) are contained in the Manual for Courts-Martial (M.C.M.), 
established as Exec. Order No. 12473, Manual for Courts-Martial, United States, 49 Fed. Reg 17,152, (April 23, 1984), 
as amended. The M.C.M. also contains the procedural rules for courts-martial, known as the Rules For Courts-Martial 
(R.C.M.). 
159 Mil. R. Evid. 402. 
160 Mil. R. Evid. 403 (relevant evidence may be excluded “if its probative value is substantially outweighed by the 
(continued...) 
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accused has the right to view any documents in the possession of the prosecution related to the 
charges, and evidence that reasonably tends to negate the guilt of the accused, reduce the degree 
of guilt or reduce the punishment,161 with some allowance for protecting non-relevant classified 
information.162 
Supporters of the use of military commissions to try suspected terrorists have viewed the 
possibility of employing evidentiary standards that vary from those used in federal courts or in 
military courts-martial as a significant advantage over those courts. The Supreme Court seemed 
to indicate that the previous DOD rules were inadequate under international law, remarking that 
“various provisions of Commission Order No. 1 dispense with the principles, articulated in 
Article 75 [of Protocol I to the Geneva Conventions] and indisputably part of the customary 
international law, that an accused must, absent disruptive conduct or consent, be present for his 
trial and must be privy to the evidence against him.”163 
The MCA provides that the accused has the right “to present evidence in [his] defense, to cross-
examine the witnesses who testify against [him], and to examine and respond to evidence 
admitted against [him] on the issue of guilt or innocence and for sentencing.”164 It is not clear 
what evidence might be excluded from this requirement as irrelevant to the issues of guilt, 
innocence, or appropriate punishment. It is possible that this provision could be interpreted not to 
apply to evidence relevant to the credibility of a witness or the authenticity of a document, so that 
the accused would have no right to examine and respond to such evidence, unless expressly 
provided elsewhere in the MCA. 
Discovery 
The MCA provides that defense counsel is to be afforded a reasonable opportunity to obtain 
witnesses and other evidence, including evidence in the possession of the United States, as 
specified in regulations prescribed by the Secretary of Defense.165 It does not guarantee the 
defense equal opportunity with the prosecution to obtain such evidence, as is the case at general 
courts-martial.166 The MCA provides that all of the information admitted into evidence at trial 
under any rule must be provided to the accused.167 The accused is also entitled to exculpatory and 
mitigating information known to the prosecution or investigators, 168 with procedures permitting 
some variance for security concerns.169 
                                                                  
(...continued) 
danger of unfair prejudice, confusion of the issues, or misleading the members, or by considerations of undue delay, 
waste of time, or needless presentation of cumulative evidence”). 
161 See R.C.M. 701(a)(6). 
162 Mil. R. Evid. 505 provides procedures similar to the Classified Information Procedures Act (CIPA) that applies in 
civilian court. 
163 Hamdan v. Rumsfeld, 548 U.S. 557, 635 (2006)(while accepting that the government “has a compelling interest in 
denying [the accused] access to certain sensitive information,” stating that “at least absent express statutory provision 
to the contrary, information used to convict a person of a crime must be disclosed to him”). The Court viewed the 
international law of war to be incorporated by Congress into the UCMJ language authorizing military commissions.  
164 10 U.S.C. §949a. 
165 10 U.S.C. §949j. 
166 10 U.S.C. §846. 
167 10 U.S.C. §949p-1(b). 
168 10 U.S.C. §949j. The prosecution is obligated to provide, as soon as practicable, information that is known or 
(continued...) 
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The MCA provides for the protection of national security information during the discovery phase 
of a trial under procedures similar to the Classified Information Procedures Act and the Manual 
for Courts-Martial.170 Classified information is privileged and need not be disclosed.171 Where 
M.C.O. No. 1 permitted the withholding of any “Protected Information,”172 the MCA permits the 
government to withhold only information determined by the United States Government pursuant 
to statute, executive order, or regulation to require protection against unauthorized disclosure for 
reasons of national security.173 Further, if the government wishes to withhold any classified 
information, the trial counsel must submit a declaration, signed by a knowledgeable official with 
classification authority, invoking the United States’ classified information privilege and setting 
forth the damage to the national security that the discovery of or access to such information 
reasonably could be expected to cause.174 The military judge may authorize production of the 
classified information if she determines that it would be “noncumulative, relevant, and helpful to 
a legally cognizable defense, rebuttal of the prosecution’s case, or to sentencing,” in accordance 
with standards generally applicable in federal criminal cases.175 Specifically, the military judge 
may authorize the government to delete specified portions of evidence to be made available to the 
accused, or may allow an unclassified summary or statement setting forth the facts the evidence 
would tend to prove, to the extent practicable in accordance with the rules used at general courts-
martial.176 Trial counsel may submit applications for protective measures on an ex parte basis, and 
the MCA does not provide defense counsel with access to the classified information that serves as 
the basis for substitute or redacted proffers. The decision to permit a substitution or grant other 
relief, which is required so long as the military judge determines such relief would “provide the 
accused with substantially the same ability to make a defense” as would access to the classified 
information itself, is not subject to a motion for reconsideration, but all of the submitted 
information and hearing transcripts are sealed and preserved for submission in case of appeal. 
Admissibility of Evidence 
The Secretary of Defense may prescribe in the rules of evidence that evidence is admissible as 
authentic if the military judge determines that “there is sufficient evidence that the evidence is 
what it is claimed to be,” and instructs the members that they may consider any issue as to 
authentication or identification of evidence in determining the weight, if any, to be given to the 
                                                                  
(...continued) 
reasonably should be known to the prosecution or any government officials who participated in the investigation that 
tends to negate or mitigate the guilt of the accused of an offense charged or to impeach the credibility of a witness 
whom the government intends to call at trial. As soon as practicable after a finding of guilt, the prosecution is required 
to disclose any other information that might reasonably be viewed as mitigating factors for sentencing.  
169 10 U.S.C. §§949p-(1-7). Where potential evidence is classified, trial counsel is to work with the original 
classification authority to declassify the information to the maximum extent possible, but decisions not to declassify are 
not subject to review by the military judge. 10 U.S.C. §949p-1(c). 
170 10 U.S.C. §949p-4. 
171 10 U.S.C. §949p-1(a). 
172 M.C.O. No. 1, §6 (defining “Protected Information” to include classified or classifiable information, information 
protected “by law or rule from unauthorized disclosure,” information that could endanger trial participants, intelligence 
and law enforcement sources, methods or activities, or “information concerning other national security interests”). 
173 10 U.S.C. §§948a(2) & 949p-1. 
174 10 U.S.C. §949p-4(a). 
175 Id. 
176 10 U.S.C. §949p-4(b). 
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evidence.177 The accused is entitled to the exclusion of evidence that is not probative or reliable, 
or of evidence the probative value of which is substantially outweighed by the “danger of unfair 
prejudice, confusion of the issues, or misleading the members”; or by “considerations of undue 
delay, waste of time, or needless presentation of cumulative evidence.”178 
Coerced Statements 
The MCA prohibits the use of statements obtained through torture as evidence in a trial, except to 
prove torture where the defendant is accused of committing torture. For information obtained 
through coercion that does not amount to torture, the MCA 2006 provided a different standard for 
admissibility depending on whether the statement was obtained prior to or after the enactment of 
the DTA. Statements elicited through such methods prior to the DTA were admissible if the 
military judge were to find that the “totality of circumstances under which the statement was 
made renders it reliable and possessing sufficient probative value” and “the interests of justice 
would best be served” by admission of the statement.179 Statements taken after passage of the 
DTA were admissible if, in addition to the two criteria above, the military judge were to find that 
“the interrogation methods used to obtain the statement do not violate the cruel, inhuman, or 
degrading treatment prohibited by section 1003 of the Detainee Treatment Act.”180 
The MCA 2009 eliminates the distinction above, making statements obtained through cruel, 
inhuman or degrading methods inadmissible regardless of when they were made.181 The Obama 
Administration had already amended the military commission regulations in May 2009 to remove 
the discrepancy.182 Otherwise, out-of-court statements by the accused may be admitted if the 
military judge finds that the totality of the circumstances renders the statement reliable and 
possessing sufficient probative value; and either that the statement was voluntarily given or that 
the statement was made “incident to lawful conduct during military operations at the point of 
capture or during closely related active combat engagement, and the interests of justice would 
best be served by admission of the statement into evidence.”183 Voluntariness is to be determined 
considering the totality of the circumstances, including the following: 
(1) The details of the taking of the statement, accounting for the circumstances of the 
conduct of military and intelligence operations during hostilities. 
                                                 
177 10 U.S.C. §949a(b)(C)(3). Under the military commissions established by the MCA2006, evidence was admissible 
if the commission deemed it to have “probative value to a reasonable person.” Previous 10 U.S.C. §949a(b)(2)(a). This 
standard was met if “a reasonable person would regard the evidence as making the existence of any fact that is of 
consequence to a determination of the commission action more probable or less probable than it would be without the 
evidence.” Mil. Comm. R. Evid. 401. At courts-martial, evidence is admitted if it is “relevant,” meaning “tending to 
make the existence of any fact that is of consequence to the determination of the action more probable or less probable 
than it would be without the evidence.” Mil. R. Evid. 401. The elimination of the “probative value to a reasonable 
person” standard by the MCA 2009 did not result in any changes to Mil. Comm. R. Evid. 401. (“Probative” differs 
from “relevant” in that relevance includes an element of materiality to an issue, where “probative” simply means “tends 
to prove” a fact, whether or not the fact is material to the case).  
178 10 U.S.C. §949a(b)(2)(F). Under the MCA2006, this right could be (and was) included in the procedural rules at the 
discretion of the Secretary of Defense. 
179 Previous 10 U.S.C. §948r(c). 
180 Previous 10 U.S.C. §948r(d). 
181 10 U.S.C. §948r. 
182 Gates letter, supra footnote 19. See Mil. Comm. R. Evid. 304 (2012). 
183 10 U.S.C. §948r(c). 
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(2) The characteristics of the accused, such as military training, age, and education level. 
(3) The lapse of time, change of place, or change in identity of the questioners between the 
statement sought to be admitted and any prior questioning of the accused.184 
The defense is required to make any objections to the proposed use of any statements by the 
accused prior to entering a plea, if the trial counsel has disclosed the intent to use the statement, 
otherwise the objection will be deemed to have been waived.185 The military judge may require 
the defense to establish the grounds for excluding the statement. However, the government has 
the burden of establishing the admissibility of the evidence. If the statement is ruled admissible, 
the defense is permitted to present evidence with respect to the voluntariness of the statement, and 
the military judge must instruct the members to consider that factor in according weight to the 
evidence. Testimony given by the accused for the purpose of denying having made a statement or 
for disputing the admissibility of a statement is not to be used against him for any purpose other 
than in prosecution for perjury or false statements.186 
The current version of Mil. Comm. R. Evid. 304 is modeled on Mil. R. Evid. 304, which 
prescribes rules for courts-martial to provide for the admission into evidence of confessions and 
admissions (self-incriminating statements not amounting to an admission of guilt). Under court-
martial rules, such a statement and any evidence derived as a result of such a statement are 
admissible only if the statement was made voluntarily. Involuntary statements are those elicited 
through coercion or other means in violation of constitutional due process. To be used as evidence 
of guilt against the accused at court martial, a confession or admission must be corroborated by 
independent evidence. There is no requirement for corroboration of such statements at military 
commissions; however, the military judge may take the existence of corroborating evidence into 
consideration in determining the probative value and reliability of the statement. 
In one case before a military commission, the military judge ordered a detainee’s statements to 
Afghan officials at the time of his capture suppressed on the basis of death threats against the 
detainee as well as his family.187 Such treatment is regarded as torture under the Military 
Commission Rules of Evidence.188 Further, the military judge ruled that statements subsequently 
made by the accused to U.S. interrogators likewise were required to be suppressed because they 
were taken under circumstances that did not sufficiently dissipate the coercive effect of the earlier 
threats.189 The government sought to appeal the latter ruling, but later dropped the charges against 
the detainee after he prevailed in his habeas petition.190 
                                                 
184 10 U.S.C. §948r(d). 
185 Mil. Comm. R. Evid. 304(d). 
186 Mil. Comm. R. Evid. 304(f). 
187 United States v. Jawad, ruling on Defense Motion to Suppress Out-of-Court Statements of the Accused to Afghan 
Authorities (D-022) (October 28, 2008). 
188 Mil. R. Evid. 304. 
189 United States v. Jawad, ruling on Defense Motion to Suppress Out-of-Court Statements of the Accused Made While 
in U.S. Custody (D-021) (November 19, 2008). 
190 For a detailed history of the Jawad case, see David J. R. Frakt, Mohammed Jawad And The Military Commissions Of 
Guantánamo, 60 DUKE L.J. 1367 (2011). 
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Hearsay 
Hearsay evidence is an out-of-court statement, whether oral, written, or conveyed through non-
verbal conduct, introduced into evidence to prove the truth of the matter asserted. M.C.O. No. 1 
did not exclude hearsay evidence. The MCA allows for the admission of hearsay evidence that 
would not be permitted under the Manual for Courts-Martial191 only if the proponent of the 
evidence notifies the adverse party sufficiently in advance of trial of the intention to offer the 
evidence, as well as the “particulars of the evidence (including [unclassified] information on the 
general circumstances under which the evidence was obtained).”192 Originally, the evidence was 
to be inadmissible only if the party opposing its admission “clearly demonstrates that the 
evidence is unreliable or lacking in probative value.”193 The May 2009 changes to the regulations 
reverse the burden of demonstrating reliability to the proponent of the evidence,194 and the MCA 
2009 reflects the change. 
The rules regarding hearsay are provided in Mil. Comm. R. Evid. 801 to 807. In contrast to the 
relatively restrictive rule applied in courts-martial, where hearsay is not admissible except as 
permitted by a lengthy set of exceptions,195 the military commission rules provide that hearsay is 
admissible on the same basis as any other form of evidence except as provided by these rules or 
an act of Congress, perhaps creating a presumption of admissibility for hearsay evidence in 
military commissions. Mil. Comm. R. Evid. 803 provides that hearsay may be admitted if it 
would be admissible under the rules applicable at courts-martial. Otherwise, hearsay is admissible 
only if the party proffering it notifies the adverse party with sufficient time in advance of trial or 
hearing of its intent to offer such evidence and provides any materials in its possession regarding 
the time, place, and conditions under which the statement was procured; and the military judge 
finds, considering the relevant circumstances,196 that 
(A) the statement is offered as evidence of a material fact; 
(B) the statement is probative for which it is offered; 
(C) direct testimony from the witness is not available as a practical matter, taking into 
consideration the physical location of the witness, the unique circumstances of military and 
intelligence operations during hostilities, and the adverse impacts on military or intelligence 
operations that would likely result from the production of the witnesses; and 
                                                 
191 Mil. R. Evid. 801-807 provide procedures for determining the admissibility of hearsay evidence in courts-martial.  
192 10 U.S.C. §949a(b)(3)(D). 
193 Previous 10 U.S.C. §949a(b)(2)(E) (rules that may be prescribed by the Secretary of Defense). 
194 Gates letter, supra footnote 19. 
195 Mil. R. Evid. 803 (exceptions for which the availability of the declarant is immaterial); Mil. R. Evid. 804 
(exceptions applicable when declarant is unavailable); Mil. R. Evid. 807 (residual exception, which permits all other 
hearsay not covered by express exceptions when there are “equivalent circumstantial guarantees of trustworthiness” 
and the military judge determines the statement relates to a material fact, is more probative to that fact than other 
reasonably obtainable evidence, and that its introduction into evidence “serves the general purposes of the rules and the 
interest of justice”). 
196 These circumstances include “the degree to which the statement is corroborated, the indicia of reliability within the 
statement itself, and whether the will of the declarant was overborne.... ” Mil. Comm. R. Evid. 803(b)(2). 
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(D) the general purposes of the rules of evidence and the interests of justice will best be 
served by admission of the statement into evidence.197  
Under the previous rules, hearsay evidence was inadmissible if the opponent demonstrated by a 
preponderance of the evidence that such hearsay was unreliable under the totality of the 
circumstances.198 The current rules do not expressly allocate the burden of proof as to reliability 
of hearsay evidence. Presumably it falls on the proponent of the evidence. 
Classified Evidence 
The MCA 2009 adopted rules for the protection of classified information that are similar to the 
Classified Information Procedures Act (CIPA),199 which supplies rules for criminal trials in 
federal civilian courts. The rules in subchapter V of the MCA also adopt modifications to CIPA 
that reflect experience in courts that have construed it for use in federal terrorism trials.200 The 
MCA directs military judges to view CIPA case law as authoritative unless such a construction 
would be inconsistent with provisions of the MCA.201 
At military commissions convened pursuant to the MCA, classified information202 is to be 
protected during all stages of proceedings and is privileged from disclosure for national security 
purposes.203 Whenever the United States seeks to protect certain information from disclosure in 
any military commission case, the prosecution is to submit a declaration, signed by a 
knowledgeable official with classification authority, invoking the privilege and setting forth the 
damage to national security that would be expected to occur without protective measures.204 The 
military judge may not authorize the discovery of or access to such information unless he 
determines that it would be relevant and useful to any part of the defense’s case.205 The military 
judge may authorize the United States to delete or withhold specified items of classified 
information from documents made available to the accused; substitute a summary of the 
information; or substitute a statement admitting relevant facts that the classified information 
would tend to prove.206 The military judge must consider a claim of privilege and review any 
supporting materials in camera if requested by the government, and must grant the relief sought if 
he finds that the summary, statement, or other substitute would “provide the accused with 
substantially the same ability to make a defense as would discovery or access to the specific 
classified information.”207 The accused may not move for reconsideration of protective measures 
                                                 
197Mil. Comm. R. Evid. 803(b)(2). The language is identical to the MCA language found in 10 U.S.C. §949a(3)(D). 
198 Mil. Comm. R. Evid. 803(c) (2007 MCM). 
199 P.L. 96-456, October 15, 1980, codified at 18 U.S.C. App. 
200 See DAVID S. KRIS & J. DOUGLAS WILSON, 2 NATIONAL SECURITY INVESTIGATIONS & PROSECUTIONS 2D, §24:14 
(2012). 
201 10 U.S.C. §949p-1(d). 
202 Defined in 10 U.S.C. §948a(2) as “[a]ny information or material that has been determined by the United States 
Government pursuant to statute, Executive order, or regulation to require protection against unauthorized disclosure for 
reasons of national security” and “restricted data, as that term is defined in section 11y of the Atomic Energy Act of 
1954 (42 U.S.C. 2014(y)).” 
203 10 U.S.C. §949p-1. 
204 10 U.S.C. §949p-4. 
205 10 U.S.C. §949p-4(a)(2). 
206 10 U.S.C. §949p-4(b). 
207 10 U.S.C. §949p-4(b)(3). 
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granted to the government if the order was entered pursuant to an ex parte showing.208 The 
government, however, can bring an interlocutory appeal in the event the judge orders that 
classified information must be disclosed or imposes sanctions for the government’s refusal to 
permit disclosure, or refuses a protective order sought by the government.209 
With respect to the protection of intelligence sources and methods relevant to specific evidence, 
the military judge is required to permit trial counsel to introduce otherwise admissible evidence 
before the military commission without disclosing the “sources, methods, or activities by which 
the United States acquired the evidence” if the military judge finds that such information is 
otherwise admissible as evidence, that it is reliable, and that the redaction is consistent with 
affording the accused a fair trial.210  
The MCA does not explicitly provide an opportunity for the accused to contest the admissibility 
of substitute evidence proffered under the above procedures. It does not appear to permit the 
accused or his counsel to examine the evidence or a proffered substitute prior to its presentation 
to the military commission. If constitutional standards required in the Sixth Amendment are held 
to apply to military commissions, the MCA may be open to challenge for affording the accused 
an insufficient opportunity to contest evidence.  
Classified evidence is privileged under Mil. Comm. R. Evid. 505. During the examination of 
witnesses at trial, the trial counsel may make an objection to any question or motion that might 
lead to the disclosure of classified information.211 The military judge is required to take 
appropriate action, such as taking a proffer of the nature of the information the witness might be 
expected to provide, reviewing the matter in camera if requested by the government. The judge 
may order that only parts of documents or other materials be entered into evidence, unless 
fairness dictates the whole ought to be considered.212 In the event the defense reasonably expects 
to disclose classified information at trial, defense counsel must notify the trial counsel and the 
judge, and is precluded from disclosing information known or believed to be classified until the 
government has had a reasonable opportunity to move for an in camera determination as to 
protective measures.213 In the event the military judge denies a government motion to provide a 
substitution or alternative to disclosures and the accused is prevented from disclosing classified 
information at trial due to the government’s objection, the military judge may dismiss the case or, 
if the interest of justice is not served by dismissal, the judge may order other relief, such as 
dismissal of specified charges or specifications, finding against the government on any issue to 
which the excluded evidence is relevant, or striking or precluding all or part of a witness’s 
testimony.214 
                                                 
208 10 U.S.C. §949p-4(c). 
209 10 U.S.C. §950d. 
210 10 U.S.C. §949p-6(c). 
211 Mil. Comm. R. Evid. 505(i)(3). 
212 Mil. Comm. R. Evid. 505(i). Similar procedures are permitted in courts-martial. Mil. R. Evid. 505(j). 
213 Mil. Comm. R. Evid. 505(g). This rule is virtually identical to Mil. R. Evid. 505(h). 
214 Mil. Comm. R. Evid. 505(h). Similar sanctions may be applied at courts-martial. Mil. R. Evid. 505(i)(4)(E). 
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Sentencing 
The MCA provides that military commissions may adjudge “any punishment not forbidden by 
[the MCA], including the penalty of death….”215 It specifically proscribes punishment “by 
flogging, or by branding, marking, or tattooing on the body, or any other cruel or unusual 
punishment, ... or [by the] use of irons, single or double.”216 A vote of two-thirds of the members 
present is required for sentences of up to 10 years.217 Longer sentences require the concurrence of 
three-fourths of the members present.218 The death penalty must be approved unanimously, both 
as to guilt (except in the case of a guilty plea) and to the sentence, by all members present for the 
vote.219  
In cases where the death penalty is sought, a panel of 12 members is required (unless the 
convening authority certifies that 12 members are not “reasonably available” because of physical 
conditions or military exigencies, in which case no fewer than nine are required), with all 
members present for the vote agreeing on the sentence. The death penalty must be expressly 
authorized for the offense,220 and the charges referred to the commission must have expressly 
sought the penalty of death.221 The death sentence may not be executed until the commission 
proceedings have been finally adjudged lawful and all appeals are exhausted,222 and after the 
President approves the sentence.223 The President is permitted to “commute, remit, or suspend [a 
death] sentence, or any part thereof, as he sees fit.”224 For sentences other than death, the 
Secretary of the Defense or the convening authority is permitted to adjust the sentence 
downward.225  
Chapter X of the Rules for Military Commissions covers sentencing. “Aggravating factors” that 
may be presented by the trial counsel include evidence that “any offense of which the accused has 
been convicted comprises a violation of the law of war.”226 Unlike the rules for courts-martial, 
there is no express opportunity for the trial counsel to present evidence regarding rehabilitative 
potential of the accused. However, the rules provide that the accused may make a sworn or 
unsworn statement to present mitigating or extenuating circumstances or to rebut evidence of 
                                                 
215 10 U.S.C. §948d. 
216 10 U.S.C. §949s. 
217 10 U.S.C. §949m. 
218 10 U.S.C. §949m(b)(3). 
219 10 U.S.C. §949m(b)(2). 
220 The death penalty may be authorized under the MCA, the UCMJ, or the laws of war. 10 U.S.C. §949m(b)(2). The 
MCA permits the death penalty for convictions of murder of a protected person or murder in violation of the law of 
war, or spying; and if death results, any of the following crimes: attacking civilians, taking hostages, employing poison 
or similar weapon, using protected persons as a shield, torture or cruel or inhuman treatment, intentionally causing 
serious bodily injury, maiming, using treachery or perfidy, hijacking or hazarding a vessel or aircraft, terrorism, and 
conspiracy to commit any of the crimes enumerated in 10 U.S.C. §950t. 
221 10 U.S.C. §949m. 
222 An accused sentenced to death may neither waive his right to appeal nor withdraw an appeal. 10 U.S.C. §950c. 
223 10 U.S.C. §950i(b)-(c). 
224 10 U.S.C. §950i(b). 
225 10 U.S.C. §950i(d). 
226 R.M.C. 1001(b)(2).  
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aggravation submitted by the trial counsel. In the case of an unsworn statement, which may be 
written or oral, the accused is not subject to cross-examination by the trial counsel.227 
The death penalty may only be adjudged if expressly authorized for the offense listed or if it is 
authorized under the law of war; and all twelve members of the commission voted to convict the 
accused (except in the case of a guilty plea);228 found that at least one of the listed aggravating 
factors exists; agreed that such factors outweigh any extenuating or mitigating circumstances; and 
voted to impose the death penalty. Aggravating factors include that the offense resulted in the 
death of or substantially endangered the life of one or more other persons, the offense was 
committed for the purpose of receiving money or a thing of value, the offense involved torture or 
certain other mistreatment, the accused was also found guilty of another capital crime, the victim 
was below the age of fifteen, or that the victim was a protected person.229 Other aggravating 
circumstances include specific law-of-war violations, which are not to be applied to offenses of 
which they are already an element. 
Post-Trial Procedure 
Subchapter VI of the MCA prescribes post-trial procedure and appeals, similar to procedures 
DOD had implemented. It provides for an administrative review of the trial record by the 
convening authority followed by a review panel. The MCA 2009 did not make major changes to 
the appellate structure. 
Review and Appeal 
The MCA 2006 codified the establishment of the review body set up under the pre-2006 DOD 
rules for military commissions.230 The Court of Military Commission Review (CMCR) is 
composed of judges who meet the same qualifications as military judges or comparable 
qualifications for civilian judges.231 The accused may appeal a final decision of the military 
commission with respect to issues of law to the CMCR. Like the UCMJ, the MCA prohibits the 
invalidation of a verdict or sentence due to an error of law unless the error materially prejudices 
the substantial rights of the accused.232 If the CMCR approves the verdict, the accused may 
appeal the final decision to the U.S. Court of Appeals for the District of Columbia Circuit.233 
Appellate court decisions may be reviewed by the Supreme Court under writ of certiorari.234 
                                                 
227 R.M.C. 1001(c)(2)(C). The trial counsel may rebut the statement. This procedure does not appear to differ 
substantially from that used in courts-martial. 
228 10 U.S.C. §949m was modified to permit accused in capital cases to plead guilty, an option that is not available 
under the UCMJ. P.L. 112-81, §1030(a). 
229 R.M.C. 1004(c). Previous versions of the Manual included as an aggravating offense that “the accused was 
convicted of an offense, referred as capital, that is a violation of the law of war.” 
230 M.C.I. No. 9 §4(C). 
231 10 U.S.C. §950f. This section was modified in 2011 to remove an ambiguous reference to the judges on the court as 
“appellate military judges,” which it was argued meant that judges had to be current appellate military judges and were 
disqualified once they were no longer actively serving on an appellate military court under the UCMJ. P.L. 112-81, 
§1034(c). It appears that judges appointed to the CMCR by the Secretary of Defense are still required to be appellate 
military judges at the time of appointment. There is no such requirement for those appointed by the President with the 
advice and consent of the Senate. 
232 10 U.S.C. §859; 10 U.S.C. §950a(a). 
233 10 U.S.C. §950g. No collateral attack on the military commission’s jurisdiction or verdict was permitted under the 
(continued...) 
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Post-trial procedures for military commissions are set forth in Chapter XI of the Rules for 
Military Commissions. Post-trial proceedings may be conducted to correct errors, omissions, or 
inconsistencies, where the revision can be accomplished without material prejudice to the 
accused.235 Sessions without members may be ordered to reconsider any trial ruling that 
substantially affects the legal sufficiency of any findings of guilt or the sentence.236 
Once the record is authenticated and forwarded to the convening authority, the accused is 
permitted, within 20 days unless additional time is approved, to submit matters relevant to 
whether to approve the sentence or disapprove findings of guilt.237 The convening authority is 
required to consider written submissions. If the military commission has made a finding of guilty, 
the legal advisor also reviews the record and provides recommendations to the convening 
authority.238 The convening authority may not take an action disapproving a finding of not guilty 
or a ruling that amounts to a finding of not guilty.239 However, in the case of a finding of not 
guilty by reason of lack of mental responsibility, the convening authority may commit the 
accused to a suitable facility for treatment pending a hearing to determine whether the accused 
may be released or detained under less than the most stringent circumstances without posing a 
danger to others.240 
Rehearings of guilty findings may be ordered at the discretion of the convening authority, except 
where there is a lack of sufficient evidence to support the charge or lesser included offense. 
Rehearings are permitted if evidence that should not have been admitted can be replaced by an 
admissible substitute.241 Any part of a sentence served pursuant to the military commission’s 
original holding counts toward any sentence that results from a hearing for resentencing.242 
In all cases in which the convening authority approves a finding of guilty, the record is forwarded 
to the CMCR, unless the accused (where the sentence does not include death) waives review.243 
No relief may be granted by the CMCR unless an error of law prejudiced a substantial trial right 
of the accused.244 The accused has 20 days after receiving notification of the CMCR decision to 
                                                                  
(...continued) 
MCA 2006. 10 U.S.C. §949j(b) previously provided that 
Except as otherwise provided in this chapter and notwithstanding any other provision of law 
(including section 2241 of title 28 or any other habeas corpus provision), no court, justice, or judge 
shall have jurisdiction to hear or consider any claim or cause of action whatsoever, including any 
action pending on or filed after the date of the enactment of the Military Commissions Act of 2006, 
relating to the prosecution, trial, or judgment of a military commission under this chapter, including 
challenges to the lawfulness of procedures of military commissions under this chapter. 
234 10 U.S.C. §950g. 
235 R.M.C. 1102(b). 
236 Id. 
237 R.M.C. 1105. 
238 R.M.C. 1106. 
239 R.M.C. 1107. 
240 R.M.C. 1107; R.M.C. 1102A. 
241 R.M.C. 1107(e). 
242 R.M.C. 1107(f)(5). 
243 R.M.C. 1111. Courts-martial findings are first forwarded to the Judge Advocate General of the particular service for 
legal review, R.C.M. 1112. 
244 R.M.C. 1201. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
submit a petition for review with the U.S. Court of Appeals for the District of Columbia Circuit. 
Within two years after a military commission conviction becomes final, an accused may petition 
the convening authority for a new trial on the ground of newly discovered evidence or fraud on 
the military commission.245 
Protection Against Double Jeopardy 
Prior to the MCA, DOD regulations for military commissions provided that the accused could not 
be tried for the same charge twice by any military commission once the commission’s finding on 
that charge became final (meaning once the verdict and sentence had been approved).246 
However, the regulations appeared to permit revisions of a verdict prior to its becoming final in 
ways that might have resulted in double jeopardy.247  
The MCA provides that “[n]o person may, without the person’s consent, be tried by a military 
commission under this chapter a second time for the same offense.”248 Jeopardy attaches when a 
guilty finding becomes final after review of the case has been fully completed.249 The MCA 
prevents double jeopardy in such cases by expressly eliminating the possibility that a finding that 
amounts to a verdict of not guilty is subject to reversal by the convening authority or to review by 
the CMCR or the D.C. Circuit. The severity of a sentence adjudged by the military commission 
cannot be increased on rehearing unless the sentence prescribed for the offense is mandatory.250 
These protections are covered in Chapter XI of the Rules for Military Commission. Proceedings 
are not authorized to reconsider any ruling that amounts to a finding of not guilty as to any charge 
or specification, except with respect to a charge where the record indicates guilt as to a 
specification that may be charged as a separate offense under the MCA.251 Proceedings for 
increasing the severity of a sentence are not permitted unless the commission failed to adjudge a 
proper sentence under the MCA.252 
The inadequacy of an indictment in specifying charges could raise double jeopardy concerns. If 
the charge does not adequately describe the offense, another trial for the same offense under a 
new description is not as easily prevented. The MCA requires that charges and specifications be 
signed under oath by a person with personal knowledge or reason to believe that matters set forth 
therein are true,253 and requires that they be served on the accused written in a language he 
understands.254 There is no express requirement regarding the specificity of the charges in the 
MCA, but the Rules for Military Commission provide that the charge must state the punitive 
                                                 
245 R.M.C. 1210. This option is not available to those convicted pursuant to a guilty plea. 
246 M.C.O. No. 1 §5(P). The finding was to become final when “the President or, if designated by the President, the 
Secretary of Defense makes a final decision thereon pursuant to Section 4(c)(8) of the President’s Military Order and in 
accordance with Section 6(H)(6) of [M.C.O. No. 1].” Id. §6(H)(2). 
247 See CRS Report RL33688, The Military Commissions Act of 2006: Analysis of Procedural Rules and Comparison 
with Previous DOD Rules and the Uniform Code of Military Justice. 
248 10 U.S.C. §949h.  
249 10 U.S.C. §949h. 
250 10 U.S.C. §950b(d)(2)(B). 
251 R.M.C. 1102(c). 
252 Id. R.M.C. 1102(c) of the 2007 M.M.C. also permitted rehearing where the sentence was less than that agreed to in a 
plea agreement. 
253 10 U.S.C. §948q. 
254 10 U.S.C. §948s. 
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article of the act, law of war, or offense as defined in the Manual for Military Commissions that 
the accused is alleged to have violated.255 A specification must allege every element of the 
charged offense expressly or by necessary implication.256 The Rules for Military Commissions 
make the trial counsel responsible for causing the accused to be served a copy of the charges in 
English and another language that the accused understands, where appropriate.257 After the 
accused is arraigned, the military judge may permit minor changes in the charges and 
specifications before findings are announced if no substantial right of the accused is prejudiced, 
but no major changes may be made over the objection of the accused without a new referral.258 
President Bush’s 2001 Military Order also left open the possibility that a person subject to the 
order might be transferred at any time to some other governmental authority for trial, or that a 
person already charged for crimes in federal courts could be made subject to the Order and 
transferred for trial by military commission.259 Double jeopardy might have arisen in either event, 
depending on whether jeopardy had attached prior to transfer, even if the trial did not result in a 
final verdict.260 The MCA does not expressly address such transfers or prohibit trial in another 
forum. The Rules for Military Commissions, however, provide the accused a waivable right to 
move to dismiss charges on the basis that he has previously been tried by a federal civilian court 
for the same offense.261 
The following charts provide a comparison of general courts-martial to the military tribunals 
under the Military Commissions Act of 2006 as initially enacted and as amended by the Military 
Commissions Act of 2009. Chart 1 compares the legal authorities for establishing military 
tribunals (including courts-martial), the jurisdiction over persons and offenses, and the structures 
of the tribunals. Chart 2, which compares procedural safeguards, follows the same order and 
format used in CRS Report RL31262, Selected Procedural Safeguards in Federal, Military, and 
International Courts, by Jennifer K. Elsea, in order to facilitate comparison of the proposed 
legislation to safeguards provided in federal court,262 the international military tribunals that tried 
World War II crimes at Nuremberg and Tokyo, and contemporary ad hoc tribunals set up by the 
UN Security Council to try crimes associated with hostilities in the former Yugoslavia and 
Rwanda. 
                                                 
255 R.M.C. 307. 
256 Id. 
257 R.M.C. 602. 
258 R.M.C. 603. 
259 M.O. §7(e). 
260 The MCA does not define when jeopardy attaches in the event a trial is halted prior to a verdict being reached 
through no fault of the accused. Compare 10 U.S.C. §949h to Article 44 of the UCMJ, 10 U.S.C. §844. 
261 R.M.C. 907. 
262 See also CRS Report R40932, Comparison of Rights in Military Commission Trials and Trials in Federal Criminal 
Court, by Jennifer K. Elsea. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Chart 1. Comparison of Military Commission Rules 
Authority 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
U.S. Constitution, Article I, §8, in 
U.S. Constitution, Article I, §8, in 
Same as for MCA 2006. 
particular cl. 14 “To make Rules for 
particular, cl. 10, “To define and 
the Government and Regulation of 
punish Piracies and Felonies 
the land and naval Forces.” 
committed on the high Seas, and 
Offences against the Law of 
Nations”; cl. 11, “To declare War, 
grant Letters of Marque and Reprisal, 
and make Rules concerning Captures 
on Land and Water”; and cl. 14 
(Necessary and Proper Clause). 
Procedure 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Rules are provided by the Uniform 
The Secretary of Defense may 
The Secretary of Defense may 
Code of Military Justice (UCMJ), 
prescribe rules of evidence and 
prescribe rules of procedure for 
chapter 47, Title 10, and the Rules 
procedure for military commissions 
military commissions. Such rules may 
for Courts-Martial (R.C.M.) and the 
not inconsistent with the MCA. 
not be inconsistent with the MCA. 
Military Rules of Evidence (Mil. R. 
Rules applicable to courts-martial 
Procedural rules for general courts-
Evid.), issued by the President 
under the UCMJ are to apply except 
martial are to apply unless the MCA 
pursuant to art. 36, UCMJ,  
as otherwise specified.  
or UCMJ provide otherwise. 
10 U.S.C. §836. 
Consultation with the Attorney 
Former 10 U.S.C. §949a(a).  
General is required only in cases of 
The Secretary of Defense, in 
exceptions, which continue to be 
consultation with the Attorney 
permissible “as may be required by 
General, may make exceptions to 
the unique circumstances of the 
UCMJ procedural rules “as may be 
conduct of military and intelligence 
required by the unique 
operations during hostilities or by 
circumstances of the conduct of 
other practical need.”  
military and intelligence operations 
10 U.S.C. §949a (as amended). 
during hostilities or by other 
practical need.” 
Suppression of certain evidence is a 
required right rather than an 
Former 10 U.S.C.§949a(b).  
optional rule (see Chart 2 specific 
The rules must include certain rights 
rights). The right to representation 
as listed in former §949a(b)(2), but 
by civilian counsel is included. The 
need not include procedural rules 
procedural rules may no longer 
listed in former §949a(b)(3).  
provide that evidence shall be 
admissible if the military judge 
Pursuant to the above authority, the 
determines that it would have 
Secretary of Defense published the 
“probative value to a reasonable 
Manual for Military Commissions 
person.”  
(M.M.C.), including the Rules for 
Military Commissions (R.M.C.) and 
10 U.S.C. §949a(b) (as amended). 
the Military Commission Rules of 
Evidence (Mil. Comm. R. Evid.). 
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Jurisdiction over Persons 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Members of the armed forces, 
Any “alien unlawful combatant” is 
Any “alien unprivileged enemy 
cadets, midshipmen, reservists while 
subject to trial by military 
belligerent” is subject to trial by 
on inactive-duty training, members 
commission.  
military commission under the MCA. 
of the National Guard or Air 
(The requirement in the original 
National Guard when in federal 
Former 10 U.S.C. §948c. 
Senate bill that such persons had 
service, prisoners of war in custody 
An “unlawful enemy combatant” is 
engaged in or supported hostilities 
of the armed forces, civilian 
“a person who has engaged in 
against the United States was deleted 
employees accompanying the armed 
hostilities or who has purposefully 
in conference.) 
forces in time of declared war or 
and materially supported hostilities 
contingency operation, and certain 
10 U.S.C. §948c. 
against the United States or its co-
others, including “persons within an 
belligerents who is not a lawful 
The term `unprivileged enemy 
area leased by or otherwise reserved  enemy combatant (including a 
belligerent’ is defined to mean “an 
or acquired for the use of the United  person who is part of the Taliban, Al  individual (other than a privileged 
States.” As amended by the MCA 
Qaeda, or associated forces)”; or a 
belligerent) who has engaged in 
2009, it includes persons entitled to 
person determined to be an unlawful  hostilities against the United States 
prisoner of war status who violate 
enemy combatant by a CSRT or 
or its coalition partners; or has 
the laws of war, subsection (13) (as 
other competent tribunal established  purposefully and materially 
amended). 
under the authority of the President 
supported hostilities against the 
10 U.S.C. §802. 
or the Secretary of Defense, which 
United States or its coalition 
determination is dispositive of status.  partners.... ” It also includes persons 
Individuals who are subject to 
who were members of Al Qaeda at 
military tribunal jurisdiction under 
 Former 10 U.S.C. §§948a 
the time they commit an offense. 
the law of war may also be tried by 
and 948d(c).  
“Privileged belligerent” means an 
general court martial. 
“Lawful combatant” is defined in 
individual who is entitled to 
prisoners of war status under one of 
10 U.S.C. §818. 
terms similar to the definition of 
prisoner of war in Art 4 (1-3) of the 
the eight categories set forth in 
Court-martial jurisdiction for law of 
Geneva Convention for the 
GPW Art. 4.  
war offenses committed by “any 
Treatment of Prisoners of War 
10 U.S.C. §948a(6-7). 
person” (whether or not subject to 
(GPW), except that it does not 
the UCMJ under 10 U.S.C. §802) 
include militias and volunteer forces 
The term “coalition partners” has a 
does not deprive common law 
that form part of the regular armed 
definition similar to that of “co-
military commissions under the 
forces of a state, although these 
belligerents” in the MCA 2006. It 
UCMJ of concurrent jurisdiction, but 
apparently would be covered if they 
applies to states and armed forces 
the language preserving military 
meet the four conditions set forth in 
directly engaged in hostilities along 
commission jurisdiction does not 
GPW art. 4(2)   
with the United States or providing 
apply to those conducted under the 
direct operational support. to the 
MCA. 
Former 10 U.S.C. §948a(2).  
United States. “Hostilities,” 
previously undefined, now refers to 
10 U.S.C. §821 (as amended by MCA  R.M.C. 201 and 202 provide for 
“any conflict subject to the laws of 
2006). 
jurisdictional requirements of 
military commissions in accordance 
war.” 
with the MCA. 
 10 U.S.C. §948a. 
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Jurisdiction over Offenses 
General Courts 
Martial 
Military Commissions Act of 2006 
Military Commissions Act of 2009 
Any offenses 
A military commission has jurisdiction to try any 
A military commission has jurisdiction over 
made punishable 
offense made punishable by the MCA or the law 
persons subject to the MCA for offenses 
by the UCMJ; 
of war when committed by an alien unlawful 
made punishable by the MCA, arts. 104 
offenses subject 
enemy combatant before, on, or after September 
and 106 of the UCMJ, or the law of war. 
to trial by military  11, 2001.  
Military commissions are expressly 
tribunal under 
authorized to determine their own 
the law of war.  
Former 10 U.S.C. §948d(a).  
jurisdiction. 
10 U.S.C. §818. 
Offenses previously codified at 10 U.S.C. §§950q-
10 U.S.C. §948d. (Articles 104 and 106 of 
w included the fol owing: murder of protected 
the UCMJ, however, state that they do not 
persons; attacking civilians, civilian objects, or 
apply to military commissions under the 
protected property; pil aging; denying quarter; 
MCA. 10 U.S.C. §§904 & 906). 
taking hostages; employing poison or similar 
weapons; using protected persons or property as 
 MCA offenses remain otherwise 
shields; torture, cruel or inhuman treatment; 
substantial y unchanged, except that there 
intentionally causing serious bodily injury; 
is an express requirement that offenses 
mutilating or maiming; murder in violation of the 
occurred “in the context of and associated 
law of war; destruction of property in violation of 
with hostilities.”  
the law of war; using treachery or perfidy; 
improperly using a flag of truce or distinctive 
10 U.S.C. §950p. 
emblem; intentionally mistreating a dead body; 
The definition of “cruel or inhuman 
rape; sexual assault or abuse; hijacking or 
treatment” is modified to refer to 
hazarding a vessel or aircraft; terrorism; providing 
treatment that constitutes a grave breach 
material support for terrorism; wrongfully aiding 
of common Article 3 of the Geneva 
the enemy; spying, contempt; perjury and 
Conventions, regardless of where the 
obstruction of justice.  
crime takes place or the nationality of the 
Former 10 U.S.C. §950v. Conspiracy 
victim. (The previous definition, which was 
(§950v(b)(28)), attempts (§950t), and solicitation 
codified at 10 U.S.C. §950v(b)(12), referred 
(§950u) to commit the defined acts are also 
to 18 U.S.C. §2340(2).) 
punishable.  
10 U.S.C. §950t(12). 
Composition 
General Courts 
Martial 
Military Commissions Act of 2006 
Military Commissions Act of 2009 
A military judge and 
A military judge and at least five members, 
No changes. 
not less than five 
unless the death penalty is sought, in which 
members, or if 
case no fewer than 12 members must be 
10 U.S.C. §948m; 10 U.S.C. §949m. 
requested, except in  included. 
capital cases, a 
military judge alone. 
Former 10 U.S.C. §948m. 
 10 U.S.C. §816, 
Former 10 U.S.C. §949m provided that, in 
R.C.M. 501. 
death penalty cases where twelve members 
were not reasonably available because of 
physical conditions or military exigencies, the 
convening authority may approve a 
commission with as few as 9 members. 
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Chart 2. Comparison of Procedural Safeguards 
Presumption of Innocence  
Military Commissions 
General Courts Martial 
Military Commissions Act of 2006 
Act of 2009 
If the defendant fails to enter a 
Before a vote is taken on the findings, the 
10 U.S.C. §949l and 10 
proper plea, a plea of not guilty will 
military judge must instruct the commission 
U.S.C. §949i are 
be entered. 
members “that the accused must be 
substantial y unchanged. 
presumed to be innocent until his guilt is 
R.C.M. 910(b). 
established by legal and competent evidence 
 
Members of court-martial must be 
beyond reasonable doubt.” 
instructed that the “accused must be 
10 U.S.C. §949l. 
presumed to be innocent until the 
accused’s guilt is established by legal 
If an accused refuses to enter a plea or pleads 
and competent evidence beyond a 
guilty but provides inconsistent testimony, or 
reasonable doubt.” 
if it appears that he lacks proper 
understanding of the meaning and effect of the 
R.C.M. 920(e). 
guilty plea, the commission must treat the plea 
The accused shall be properly attired  as denying guilt. 
in uniform with grade insignia and 
10 U.S.C. §949i. 
any decorations to which entitled. 
Physical restraint shall not be 
imposed unless prescribed by the 
military judge. 
R.C.M. 804. 
Right to Remain Silent (Freedom from Coerced Statements) 
Military Commissions Act of 
The Military Commissions Act 
General Courts Martial 
2006 
of 2009 
Coerced confessions or confessions 
Sections a, b, and d of Article 31, 
10 U.S.C. §948b(d) remains 
made in custody without statutory 
UCMJ, were expressly made 
unchanged.  
equivalent of Miranda warning are 
inapplicable. These provide that no 
not admissible as evidence. 
person subject to the UCMJ may 
Secretary of Defense may provide 
compel any person to incriminate 
that confessions allegedly elicited 
Art. 31, UCMJ, 10 U.S.C. §831. 
himself or interrogate an accused 
through coercion or compulsory 
self-incrimination that are otherwise 
Rules of evidence provide that in 
without first informing him of his 
admissible are not to be excluded at 
most cases “an involuntary 
right to remain silent, and that 
trial unless their admission violates 
statement or any derivative evidence 
statements obtained in violation of 
Section 948r.  
therefrom may not be received in 
the above or through other unlawful 
evidence against an accused who 
inducement may not be received in 
10 U.S.C. §949a(b)(3)(B). 
made the statement if the accused 
evidence against him in a trial by 
makes a timely motion to suppress 
court-martial. 
Section 948r now provides for the 
or an objection to the evidence 
exclusion of statements elicited 
Former 10 U.S.C. §948b(d). 
under this rule.” 
through torture as well as cruel, 
Secretary of Defense permitted to 
inhuman, or degrading treatment 
Mil. R. Evid. 304. 
provide that confessions allegedly 
prohibited by Section 1003 of the 
DTA (42 U.S.C. §2000dd), regardless 
The prosecutor must notify the 
elicited through coercion or 
of when the statement was made. 
defense of any incriminating 
compulsory self-incrimination that 
statements made by the accused that  were otherwise admissible were not 
No statement of the accused is 
are relevant to the case prior to the 
to be excluded at trial except when 
admissible at trial unless the military 
arraignment. Motions to suppress 
admission would violate Section 
judge finds that the totality of the 
such statements must be made prior 
948r.  
circumstances renders the statement 
to pleading. 
reliable and possessing sufficient 
Congressional Research Service 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Military Commissions Act of 
The Military Commissions Act 
General Courts Martial 
2006 
of 2009 
Mil. R. Evid. 304. 
Former 10 U.S.C. §949a(b)(2)(C). 
probative value and that it was either 
made incident to military operations, 
Interrogations conducted by foreign 
Section 948r provided that 
where the interests of justice would 
officials do not require warnings or 
statements elicited through torture 
best be served by admission of the 
presence of counsel unless the 
may not be entered into evidence 
statement into evidence; or that the 
interrogation is instigated or 
except to prove a charge of torture. 
statement was voluntarily given, 
conducted by U.S. military 
taking into consideration all relevant 
personnel. 
A statement of the accused obtained 
prior to the enactment of the DTA 
circumstances, including military and 
Mil. R. Evid. 305.  
through coercion that does not 
intelligence operations during 
amount to torture was admissible if 
hostilities; the accused’s age, 
the military judge found that  
education level, military training; and 
the change in place or identity of 
1. the “totality of circumstances 
interrogator between that statement 
under which [it] was made 
and any prior questioning of the 
renders it reliable and 
accused. 
possessing sufficient probative 
value” and 
10 U.S.C. §949r. 
2. “the interests of justice 
Derivative evidence obtained using 
would best be served” by 
coerced statement is not expressly 
admission of the statement. 
barred. 
Statements taken after passage of the 
DTA were admissible if the military 
judge also found that 
 “the interrogation methods 
used to obtain [them] do not 
violate the cruel, unusual, or 
inhumane treatment or 
punishment prohibited by the 
Fifth, Eighth, and Fourteenth 
Amendments to the U.S. 
Constitution.” 
Former 10 U.S.C. §948r.  
Evidence derived from impermissible 
interrogation methods was not 
expressly barred. 
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Freedom from Unreasonable Searches and Seizures 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
“Evidence obtained as a result of an 
Not provided. Evidence was 
The language permitting procedural 
unlawful search or seizure ... is 
generally permitted if it was judged 
rules to permit evidence having 
inadmissible against the accused ...” 
to have probative value to a 
probative value to a reasonable 
unless certain exceptions apply. 
reasonable person, unless it was 
person was omitted. 
obtained under circumstances that 
Mil. R. Evid. 311. 
would render it unreliable. 
The Secretary of Defense may 
provide that “evidence seized 
“Authorization to search” may be 
Former 10 U.S.C. §§948r, 949a. 
outside the United States shall not 
oral or written, and may be issued 
be excluded from trial by military 
by a military judge or an officer in 
Procedural rules may provide that 
commission on the grounds that the 
command of the area to be 
evidence gathered without 
evidence was not seized pursuant to 
searched, or if the area is not under 
authorization or a search warrant 
a search warrant or other 
military control, with authority over 
may be admitted into evidence. 
authorization.” 
persons subject to military law or 
the law of war. It must be based on 
Former 10 U.S.C. §949a. 
10 U.S.C. §949a. 
probable cause. 
Mil. R. Evid. 315. 
Interception of wire and oral 
communications within the United 
States requires judicial application in 
accordance with 18 U.S.C. §§2516 et 
seq. 
Mil. R. Evid. 317. 
A search conducted by foreign 
officials is unlawful only if the 
accused is subject to “gross and 
brutal treatment.” 
Mil. R. Evid. 311(c). 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Effective Assistance of Counsel  
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
The defendant has a right to military 
At least one qualifying military 
At least one qualifying military 
counsel at government expense. The 
defense counsel is to be detailed “as 
defense counsel is to be detailed “as 
defendant may choose counsel, if 
soon as practicable after the 
soon as practicable.” 
that attorney is reasonably available, 
swearing of charges….” 
and may hire a civilian attorney in 
10 U.S.C. §948k. 
addition to military counsel. 
Former 10 U.S.C. §948k. 
The accused is entitled to select one 
Art. 38, UCMJ, 10 U.S.C. §838. 
The accused may also hire a civilian 
“reasonably available” military 
attorney who 
counsel to represent him. The 
Appointed counsel must be certified 
accused is not entitled to have more 
as qualified and may not be someone 
1. is a U.S. citizen, 
than one military counsel, but 
who has taken any part in the 
2. is admitted to the bar in any state, 
“associate defense counsel” may be 
investigation or prosecution, unless 
district, or possession, 
authorized pursuant to regulations. 
explicitly requested by the 
defendant. 
3. has never been disciplined, 
10 U.S.C. §§948c, 948k. 
Art. 27, UCMJ, 10 U.S.C. §827. 
4. has a SECRET clearance (or 
10 U.S.C. §949c, as it relates to the 
higher, if necessary for a particular 
hiring of civilian counsel, remains 
The attorney-client privilege is 
case), and 
substantial y unchanged. 
honored. 
5. agrees to comply with all 
10 U.S.C. §949b, prohibiting adverse 
Mil. R. Evid. 502. 
applicable rules. 
personnel actions against defense 
attorneys due to “the zeal with 
Defense counsel must be a member 
Former 10 U.S.C. §949c(b)(3). 
which such officer, in acting as 
of the bar of a federal or state court 
counsel, represented any accused 
or authorized by a recognized 
If civilian counsel is hired, the 
before a military commission ...” also 
licensing authority to practice law 
detailed military counsel serves as 
remains unchanged. 
who is found by the military judge to 
associate counsel. 
be qualifed. 
Former 10 U.S.C. §949c(b)(5). 
In capital cases, the accused is 
entitled to be represented, “to the 
R.C.M. 502. 
No attorney-client privilege is 
greatest extent practicable, by at 
Once an attorney-client relationship 
mentioned. 
least one additional counsel who is 
has been formed, defense counsel 
Adverse personnel actions may not 
learned in applicable law,” who may 
can withdraw or be excused only at 
be taken against defense attorneys 
be a civilian and may be 
the request of the accused or on 
because of the “zeal with which such 
compensated by the government in 
good cause shown. 
officer, in acting as counsel, 
accordance with regulations. 
R.C.M. 506. 
represented any accused before a 
10 U.S.C. §949a. 
military commission.…” 
Former 10 U.S.C. §949b. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Right to Indictment and Presentment 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
The right to indictment by grand jury  UCMJ Article 32 hearings are 
No substantial change to relevant 
is explicitly excluded in “cases arising  expressly made inapplicable.  
sections of the MCA 2006. 
in the land or naval forces.” 
Former 10 U.S.C. §948b(d)(1)(C). 
10 U.S.C. §948b(d)(1)(C); 10 U.S.C. 
Amendment V. 
§948q. 
Charges and specifications against an 
UCMJ Article 32 provides for an 
accused must be signed by a person 
inquiry similar to grand jury 
subject to UCMJ swearing under 
proceedings in federal criminal court.  oath that the signer has “personal 
knowledge of, or reason to believe, 
10 U.S.C. §832. 
the matters set forth therein,” and 
Whenever an offense is alleged, the 
that they are “true in fact to the best 
commander is responsible for 
of his knowledge and belief.” The 
initiating a preliminary inquiry and 
accused is to be informed of the 
deciding how to dispose of the 
charges and specifications against 
offense. 
him as soon as practicable after 
charges are sworn. 
R.C.M. 303-06. 
Former 10 U.S.C. §948q. 
Right to Written Statement of Charges 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Charges and specifications must be 
The trial counsel assigned is 
No substantial change to relevant 
signed under oath and made known 
responsible for serving defense 
sections of the MCA 2006. 
to the accused as soon as 
counsel a copy of the charges upon 
practicable. 
the accused, in English and, if 
10 U.S.C. §948s. 
appropriate, in another language that 
Art. 30, UCMJ, 10 U.S.C. §830. 
the accused understands, “sufficiently 
in advance of trial to prepare a 
defense.” 
Former 10 U.S.C. §948s. 
Right to Be Present at Trial 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
The presence of the accused is 
The accused has the right to be 
No substantial change to relevant 
required during arraignment, at the 
present at all sessions of the military 
sections of the MCA 2006. 
plea, and at every stage of the court-
commission except deliberation or 
martial unless the accused waives the  voting, unless exclusion of the 
10 U.S.C. §949a(b)(2)(B); 10 U.S.C. 
right by voluntarily absenting him or 
accused is permitted under §949d. 
§949d(d). 
herself from the proceedings after 
the arraignment or by persisting in 
Former 10 U.S.C. §949a(b)(1)(B). 
conduct that justifies the trial judge 
The accused may be excluded from 
in ordering the removal of the 
attending portions of the proceeding 
accused from the proceedings. 
if the military judge determines that 
R.C.M. 804. 
the accused persists in disruptive or 
dangerous conduct. 
Former 10 U.S.C. §949d(e). 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Prohibition Against Ex Post Facto Crimes  
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Courts-martial will not enforce an 
Crimes punishable by military 
The definition of crimes is contained 
ex post facto law, including one that 
commissions under the new chapter 
in Subchapter VIII. The conspiracy 
increases the amount of pay to be 
were codified in subchapter VII. It 
charge remains available under 10 
forfeited for a specific crime. 
included the crime of conspiracy, 
U.S.C. §950t(29). The charge of 
which a plurality of the Supreme 
“material support for terrorism,” 
U.S. v. Gorki, 47 M.J. 370 (1997). 
Court in Hamdan v. Rumsfeld viewed 
which the Obama Administration has 
 
as invalid as a charge of war crimes. 
believes could raise ex post facto 
implications, is now codified at 10 
 548 U.S. 557 (2006). 
U.S.C. §950t(25). The D.C. Circuit 
The act declared that it “codif[ies] 
has invalidated convictions for these 
offenses that have traditionally been 
crimes on the basis that they were 
triable by military commissions,” and 
not war crimes when committed.  
that “because the [defined crimes] 
Hamdan v. United States, 696 F.3d 
(including provisions that 
1238 (D.C. Cir. 2012) (Hamdan II). 
incorporate definitions in other 
provisions of law) are declarative of 
10 U.S.C. §950p continues to declare 
existing law, they do not preclude 
that the MCA as amended does not 
trial for crimes that occurred before 
define new crimes, but rather 
the date of enactment.” 
codifies preexisting offenses for trial 
by military commission, which 
Former 10 U.S.C. §950p. 
offenses “have traditionally been 
The statute expressly provided 
triable under the law of war or 
jurisdiction over the defined crimes, 
otherwise triable by military 
whether committed prior to, on or 
commission,” and therefore “does 
after September 11, 2001. 
not preclude trial for offenses that 
occurred before the date of the 
Former 10 U.S.C. §948d(a). 
enactment.... ” 
10 U.S.C. §950p(d).  
Congress did not intend for any 
offenses that were not violations of 
the law of war when committed to 
be prosecutable by military 
commission.  
Hamdan II. 
Section 948d continues to provide 
for jurisdiction over crimes 
committed “prior to, on or after 
September 11, 2001,” although the 
offense must have been committed 
“in the context of and associated 
with hostilities.”  
10 U.S.C. §948d; 10 U.S.C. §950p. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Protection Against Double Jeopardy  
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Double jeopardy clause applies. 
“No person may, without his 
No substantial change in 10 U.S.C. 
consent, be tried by a military 
§949h. 
See Wade v. Hunter, 336 US 684, 688-
commission a second time for 
89 (1949). 
the same offense.” Jeopardy 
The United States may not appeal 
any finding of not guilty. 
Art. 44, UCMJ prohibits former 
attaches when a guilty finding 
jeopardy, provides for jeopardy to attach  becomes final after review of the 
10 U.S.C. §950d(b). 
after introduction of evidence, or in 
case has been completed. There 
cases resulting in a finding of guilty, after 
is no indication when jeopardy 
Limitations on the convening 
review of the case has been completed. 
attaches in cases that are 
authority’s ability to revise findings 
dismissed without any fault of 
or order a rehearing are unchanged. 
10 U.S.C. §844. 
the accused. 
10 U.S.C. §950b(d)(2)(B). 
General court-martial proceeding is 
Former 10 U.S.C. §949h. 
considered to be a federal trial for 
double jeopardy purposes. Double 
The United States may not 
jeopardy does not result from charges 
appeal an order or ruling that 
brought in state or foreign courts, 
amounts to a finding of not 
although court-martial in such cases is 
guilty. 
disfavored. 
Former 10 U.S.C. §950d(a)(2). 
U. S. v. Stokes, 12 M.J. 229 (C.M.A. 
The convening authority may not 
1982). 
revise findings or order a 
Once military authorities have turned 
rehearing in any case to 
service member over to civil authorities 
reconsider a finding of not guilty 
for trial, military may have waived 
of any specification or a ruling 
jurisdiction for that crime, although it 
which amounts to a finding of 
may be possible to charge the individual 
not guilty, or reconsider a finding 
for another crime arising from the same 
of not guilty of any charge, unless 
conduct. 
there has been a finding of guilty 
under a specification laid under 
See 54 AM. JUR. 2d, Military and Civil 
that charge, which sufficiently 
Defense §§227-28. 
alleges a violation. The convening 
In cases in which a rehearing is ordered, 
authority may not increase the 
the accused may not be tried for any 
severity of the sentence unless 
offense of which he was found not guilty,  the sentence prescribed for the 
and a sentence cannot be increased 
offense is mandatory. 
unless there is a finding of guilty of an 
Former 10 U.S.C. §950b(d)(2)(B). 
offense not considered in the original 
proceedings or the sentence prescribed 
 
for the offense is mandatory. 
Art. 63, UCMJ, 10 U.S.C. §863. 
The United States may not appeal an 
order or ruling that amounts to a finding 
of not guilty. 
Art. 62, UCMJ, 10 U.S.C. §862. 
 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Speedy and Public Trial  
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
In general, accused must be brought 
There is no right to a speedy trial. 
No substantial change to relevant 
to trial within 120 days of the 
Article 10, UCMJ, 10 U.S.C. §810, is 
sections of the MCA. 
preferral of charges or the 
expressly made inapplicable to 
imposition of restraint, whichever 
military commissions. 
10 U.S.C. §948b(d); 10 U.S.C. 
date is earliest. 
§949b(c). 
Former 10 U.S.C. §948b(d). 
R.C.M. 707(a). 
The military judge may close all or 
The right to a public trial applies in 
part of a trial to the public only after 
courts-martial but is not absolute. 
making a determination that such 
closure is necessary to protect 
R.C.M. 806. 
information, the disclosure of which 
The military trial judge may exclude 
would be harmful to national 
the public from portions of a 
security interests or to the physical 
proceeding for the purpose of 
safety of any participant. 
protecting classified information if 
Former 10 U.S.C. §949d(d). 
the prosecution demonstrates an 
overriding need to do so and the 
closure is no broader than 
necessary. 
United States v. Grunden, 2 M.J. 116 
(CMA 1977). 
 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Burden and Standard of Proof 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Members of court martial must be 
Commission members are to be 
Instructions for commission 
instructed that the burden of proof 
instructed that the accused is 
members on the burden of and 
to establish guilt is upon the 
presumed to be innocent until his 
standard of proof are unchanged. 
government and that any reasonable 
“guilt is established by legal and 
doubt must be resolved in favor of 
competent evidence beyond 
10 U.S.C. §949l. 
the defendant. 
reasonable doubt”; that any 
Two-thirds of the members must 
reasonable doubt as to the guilt of 
R.C.M. 920(e). 
concur on a finding of guilty, except 
the accused must result in acquittal; 
in capital cases.  
that reasonable doubt as to the 
degree of guilt must be resolved in 
10 U.S.C. §949m. 
favor of the lower degree as to 
The provision for the exclusion of 
which there is no reasonable doubt; 
irrelevant, cumulative, or prejudicial 
and that the burden of proof is on 
evidence is expressly made a right of 
the government. 
the accused rather than an optional 
Former 10 U.S.C. §949l. 
rule subject to the discretion of the 
Secretary of Defense. 
Two-thirds of the members must 
concur on a finding of guilty, except 
10 U.S.C. §949a(b)(2)(E-F). 
in capital cases. (The death penalty 
requires a unanimous finding as to 
guilt as well as sentence). 
Former 10 U.S.C. §949m. 
The Secretary of Defense may 
prescribe that the military judge is to 
exclude any evidence, the probative 
value of which is substantially 
outweighed by the danger of unfair 
prejudice, confusion of the issues, or 
misleading the members of the 
commission, or by considerations of 
undue delay, waste of time, or 
needless presentation of cumulative 
evidence. 
Former 10 U.S.C. §949a. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Privilege Against Self-Incrimination 
(Freedom from Compelled Testimony) 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
No person subject to the UCMJ may 
“No person shal  be required to 
No substantial change in relevant 
compel any person to answer 
testify against himself at a 
sections of the MCA 2006. 
incriminating questions. 
commission proceeding.” 
10 U.S.C. §948r(b); 10 U.S.C. 
Art. 31(a) UCMJ, 10 U.S.C. §831(a). 
Former 10 U.S.C. §948r(a). 
§948b(d)(1)(B), 10 U.S.C. §949l(c). 
Defendant may not be compel ed to 
While most of Art. 31, UCMJ, 
give testimony that is immaterial or 
relating to compelled self-
potentially degrading. 
incrimination, is declared 
inapplicable, Art. 31(c), UCMJ, 
Art. 31(c), UCMJ, 10 U.S.C. §831(c). 
related to immaterial or degrading 
No adverse inference is to be drawn 
statements or evidence, applies to all 
from a defendant’s refusal to answer 
military tribunals.  
any questions or testify at court-
Former 10 U.S.C. §948b(d)(1)(B). 
martial. 
Adverse inferences drawn from a 
Mil. R. Evid. 301(f). 
failure to testify are not expressly 
Witnesses may not be compelled to 
prohibited; however, members are 
give testimony that may be 
to be instructed that “the accused 
incriminating unless granted 
must be presumed to be innocent 
immunity for that testimony by a 
until his guilt is established by legal 
general court-martial convening 
and competent evidence.” 
authority, as authorized by the 
10 U.S.C. §949l(c). 
Attorney General, if required. 
There does not appear to be a 
18 U.S.C. §6002; R.C.M. 704. 
provision for immunity of witnesses, 
although 18 U.S.C. §6002 appears to 
apply. 
Right to Examine or Have Examined Adverse Witnesses 
(Hearsay and Classified Evidence) 
Military Commissions Act of 
General Courts Martial 
2006 
Military Commissions Act of 2009 
Rules of Evidence prohibit 
“Defense counsel may cross-
The right to cross-examine witnesses 
generally the introduction at trial 
examine each witness for the 
remains unchanged. 
of statements made out of court to  prosecution who testifies before 
prove the truth of the matter 
the commission.” 
10 U.S.C. §949c(b)(6). 
stated unless the declarant is 
The Secretary of Defense is permitted 
available for cross-examination at 
Former 10 U.S.C. §949c(b)(7). 
to provide that hearsay evidence that 
trial (hearsay rule). 
The Secretary of Defense had the 
would not be admissible at a general 
Mil. R. Evid. 801 et seq. 
authority to establish that hearsay 
court-martial is admissible if adequate 
evidence not admissible under the 
notice is given and the military judge 
Exceptions exist for cases in which 
rules of evidence applicable in trial 
determines that the statement is reliable 
the statement may be presumed to 
by general courts-martial is 
and is offered as evidence of a material 
be reliable due to specific 
admissible only if the proponent 
fact, that direct testimony from the 
circumstances (Rule 803) or the 
notifies the adverse party 
witness is not available or would have 
witness is unavailable in court (Rule  sufficiently in advance of its 
an adverse impact on military or 
804). There is also a “residual 
intention to offer the evidence and 
intelligence operations, and that the 
exception” (Rule 807), which 
the particulars of the evidence 
general purposes of the rules of 
covers statements not covered 
(including information on the 
evidence and the interests of justice will 
under other rules but having 
general circumstances under which 
best be served by admission of the 
Congressional Research Service 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Military Commissions Act of 
General Courts Martial 
2006 
Military Commissions Act of 2009 
similar indicia of trustworthiness. 
the evidence was obtained), unless 
statement into evidence. In determining 
Such statements are admissible if 
the party opposing the admission 
reliability, the military judge may be 
notice is provided to the adverse 
of the evidence “clearly 
obligated to consider the degree to 
party sufficient to provide a fair 
demonstrates that the evidence is 
which the statement is corroborated, 
opportunity to prepare to rebut it, 
unreliable or lacking in probative 
the indicia of reliability within the 
and if the military judge determines  value.”  
statement itself, and whether the will of 
the statement is more probative of 
the declarant was overborne,  
the material fact for which it is 
Former 10 U.S.C. §949a(b)(2)(E). 
offered than other reasonably 
10 U.S.C. §949a(b)(3)(D). 
In the case of classified information, 
available evidence and that its 
the military judge could authorize 
The burden of persuasion to 
admission would serve the 
the government to delete specified 
demonstrate unreliability or lack of 
interests of justice. 
portions of evidence to be made 
probative value appears to be on the 
Mil. R. Evid. 801 et seq. 
available to the accused, or allow 
profferer of the evidence. (Language 
an unclassified summary or 
providing otherwise was repealed.) 
In capital cases, sworn depositions 
statement setting forth the facts 
may not be used in lieu of witness, 
the evidence would tend to prove, 
The protection of classified information 
unless court-martial is treated as 
to the extent practicable in 
is governed by subchapter V, 10 U.S.C. 
non-capital or it is introduced by 
accordance with the rules used at 
§§949p-1–949p-7. Subchapter V 
the defense. 
general courts-martial.  
provides that the government cannot be 
compelled to disclose classified 
Art. 49, UCMJ, 10 U.S.C. §849. 
Former 10 U.S.C. §949d(f)(2)(A). 
information to anyone not authorized to 
receive it. If the government claims a 
 
privilege, the military judge may not 
authorize the discovery of or access to 
the classified information unless he 
determines the evidence is 
noncumulative, relevant, and helpful to a 
legally cognizable defense, rebuttal of 
the prosecution’s case, or to sentencing. 
If the military judge determines 
disclosure or access is necessary, the 
military judge must grant the 
government’s request to delete or 
withhold specified items of classified 
information; to substitute a summary for 
classified information; or to substitute a 
statement admitting relevant facts that 
the classified information or material 
would tend to prove, so long as the 
alternative procedure would provide 
the accused with substantial y the same 
ability to make a defense. If the 
prosecution makes a motion for 
protective measures in camera, the 
accused has no opportunity to request a 
reconsideration. 
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The Military Commissions Act of 2009 (MCA 2009): Overview and Legal Issues 
 
Right to Compulsory Process to Obtain Witnesses and 
Other Evidence (Discovery) 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Defendants before court-martial 
Defense counsel is to be afforded a 
Defense counsel is to be afforded a 
have the right to compel appearance 
reasonable opportunity to obtain 
reasonable opportunity to obtain 
of witnesses necessary to their 
witnesses and other evidence, 
witnesses and other evidence, 
defense. 
including evidence in the possession 
including evidence in the possession 
of the United States, according to 
of the United States, in a manner 
R.C.M. 703. 
DOD regulations.  
comparable to the opportunity 
Process to compel witnesses in 
available to a criminal defendant in 
Former 10 U.S.C. §949j(a). 
court-martial cases is to be similar to 
federal court. As previously, the 
the process used in federal courts. 
The military commission is 
military commission is authorized to 
Moreover, the defense and 
authorized to compel witnesses 
compel witnesses under U.S. 
prosecution “shal  have equal 
under U.S. jurisdiction to appear.  
jurisdiction to appear. This may 
opportunity to obtain witnesses and 
include the authority to grant 
other evidence.” 
Former 10 U.S.C. §949j(b). 
immunity to witnesses whose 
testimony is self-incriminatory. 
Art. 46, UCMJ, 10 U.S.C. §846. 
The trial counsel is obligated to 
disclose exculpatory evidence of 
10 U.S.C.§949j(a)(as amended). 
In the case of a witness who is not 
which he is aware to the defense, 
available to testify, but whose 
but such information, if classified, is 
Congress emphasized its sense that 
testimony is essential to a fair trial, 
available to the accused only in a 
“the fairness and effectiveness of the 
and no adequate substitution for the 
redacted or summary form, and only 
military commissions system under 
testimony can be provided, the judge  if making the information available is 
chapter 47A of title 10 ... will depend 
must grant appropriate relief, unless 
possible without compromising 
to a significant degree on the 
the unavailability of the witness is the  intelligence sources, methods, or 
adequacy of defense counsel and 
fault of the requesting party. 
activities, or other national security 
associated resources for individuals 
interests. 
accused, particularly in the case of 
R.C.M. 703. 
capital cases,” and that “defense 
Former 10 U.S.C. §949j(d).  
There is authority to grant immunity 
counsel in military commission cases, 
to witnesses in order to compel 
The military judge may authorize 
particularly in capital cases, ... should 
testimony that may incriminate the 
discovery in accordance with rules 
be fully resourced as provided.... ” 
witness. 
prescribed by the Secretary of 
FY2010 NDAA, §1807. 
Defense to redact classified 
18 U.S.C. §6002; R.C.M. 704. 
information or to provide an 
The obligation to disclose 
The prosecution is required to 
unclassified summary or statement 
exculpatory information is expanded 
disclose any sworn statements that 
describing the evidence.  
to include mitigating evidence, and 
are material to the case. The 
the obligation extends beyond 
Former 10 U.S.C. §949j(c). 
government must also provide 
information known to the trial 
results or reports of any physical or 
 
counsel to include all information 
mental examination of the defendant. 
that is known or reasonably should 
be known to any government 
Upon the request of the accused, the 
officials who participated in the 
government must permit the 
investigation and prosecution of the 
accused to inspect and make copies 
case against the defendant. The 
or photos of tangible objects, 
military judge may authorize trial 
buildings or places, within the 
counsel to disclose such information 
control of military authorities if  
in a redacted or summary form, and 
(i) the item is material to preparing 
shall authorize such alternative forms 
the defense;  
evidence when consistent with the 
interests of justice. 
(ii) the government intends to use 
the item in its case-in-chief at trial; 
10 U.S.C. §949j(b). 
or  
The provisions regarding the 
(ii ) the item was obtained from or 
production of classified information 
belongs to the defendant.  
are removed from §949(d) and 
revised provisions inserted in 
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Military Commissions Act of 
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General Courts Martial 
2006 
2009 
Trial counsel (the prosecution) must 
subchapter V, which is to be 
give notice of any witnesses it 
construed consistent with the 
intends to call at trial. Exculpatory or 
Classified Information Procedures 
mitigating evidence known to trial 
Act (18 U.S.C. App.) to the extent 
counsel must also be disclosed. 
that such a construction does not 
conflict with the revised provisions.  
R.C.M. 701. 
10 U.S.C. §949p-1. 
Either party can request approval for 
expert testimony from the 
The military judge is to issue a 
convening authority, whose denial 
protection order to prevent the 
can be overridden by the military 
disclosure of any classified 
judge on a finding that such 
information that has been disclosed 
testimony is necessary and relevant. 
or otherwise obtained by the 
accused. 
R.C.M. 703(d).  
10 U.S.C. §949p-3. 
Discovery involving classified 
information is governed by Mil. R. 
Evid. 505. 
Right to Trial by Impartial Judge 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
A qualified military judge is detailed 
Military judges must take an oath to 
No substantial change from relevant 
to preside over the court-martial. 
perform their duties faithfully. 
sections of the MCA 2006. 
The convening authority may not 
prepare or review any report 
Former 10 U.S.C. §949g. 
10 U.S.C. §949g; 10 U.S.C. §948j(f); 
concerning the performance or 
10 U.S.C. §948j(c); 10 U.S.C. 
The convening authority is 
effectiveness of the military judge. 
§948j(d); 10 U.S.C. §949b; 10 U.S.C. 
prohibited from preparing or 
§949f. 
Art. 26, UCMJ, 10 U.S.C. §826. 
reviewing any report concerning the 
effectiveness, fitness, or efficiency of 
UCMJ Article 37 prohibits unlawful 
a military judge. 
influence of courts-martial through 
admonishment, censure, or 
Former 10 U.S.C. §948j(a). 
reprimand of its members by the 
A military judge may not be assigned 
convening authority or commanding 
to a case in which he is the accuser, 
officer, or any unlawful attempt by a 
an investigator, a witness, or a 
person subject to the UCMJ to 
counsel. 
coerce or influence the action of a 
court-martial or convening authority.  Former 10 U.S.C. §948j(c). 
Art. 37, UCMJ, 10 U.S.C. §837.  
The military judge may not consult 
with the members of the 
commission except in the presence 
of the accused, trial counsel, and 
defense counsel, nor may he vote 
with the members of the 
commission. 
Former 10 U.S.C. §948j(d). 
Convening authority may not 
censure, reprimand, or admonish the 
military judge. No person may 
attempt to coerce or use 
unauthorized means to influence the 
action of a commission. 
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Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
Former 10 U.S.C. §949b. 
The military judge may be challenged 
for cause. 
Former 10 U.S.C. §949f. 
Right to Trial by Impartial Jury  
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
A military accused has no Sixth 
Military commission members must 
No substantial change from relevant 
Amendment right to a trial by petit 
take an oath to perform their duties 
sections of the MCA 2006. 
jury. 
faithfully. 
10 U.S.C. §949g; 10 U.S.C. §949f; 10 
Ex Parte Quirin, 317 U.S. 1, 39-40 
Former 10 U.S.C. §949g. 
U.S.C. §949b. 
(1942) (dicta). 
The accused may make one 
However, “Congress has provided 
peremptory challenge, and may 
for trial by members at a court-
challenge other members for cause. 
martial.” 
Former 10 U.S.C. §949f. 
United States v. Witham, 47 M.J. 
297, 301 (1997); Art. 25, UCMJ, 10 
No convening authority may 
U.S.C. §825. 
censure, reprimand, or admonish the 
commission or any member with 
The Sixth Amendment requirement 
respect to the findings or sentence 
that the jury be impartial applies to 
or the exercise of any other 
court-martial members and covers 
functions in the conduct of the 
not only the selection of individual 
proceedings. No person may 
jurors, but also their conduct during 
attempt to coerce or, by any 
the trial proceedings and the 
unauthorized means, influence the 
subsequent deliberations. 
action of a commission or any 
member thereof, in reaching the 
United States v. Lambert, 55 M.J. 293  findings or sentence in any case. 
(2001). 
Military commission duties may not 
The absence of a right to trial by jury  be considered in the preparation of 
precludes criminal trial of civilians by 
an effectiveness report or any similar 
court-martial. 
document with potential impact on 
career-advancement. 
Reid v. Covert, 354 U.S. 1 (1957); 
Kinsella v. United States ex rel. 
Former 10 U.S.C. §949b. 
Singleton, 361 U.S. 234 (1960). 
Right to Appeal to Independent Reviewing Authority 
Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
The accused may submit matters 
The accused may submit matters for 
No change in 10 U.S.C. §950b. 
concerning the findings and the 
consideration by the convening 
sentence for consideration by the 
authority with respect to the 
The accused may appeal a final 
convening authority. The convening 
authenticated findings or sentence of 
decision of the military commission 
authority may approve, disapprove, 
the military commission. The 
with respect to any properly raised 
commute, or suspend the sentence 
convening authority must review 
issue to the United States Court of 
in whole or in part, set aside a 
timely submissions prior to taking 
Military Commission Review 
finding of guilty or change a finding of  action. 
(USCMCR), a body composed of 
guilty to a charge or specification to 
judges who meet the same 
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Military Commissions Act of 
Military Commissions Act of 
General Courts Martial 
2006 
2009 
a finding of guilty to an offense that is  Former 10 U.S.C. §950b. 
qualifications as military judges or 
a lesser included offense of the 
comparable qualifications for civilian 
offense stated in the charge or 
The accused may appeal a final 
judges. The Secretary of Defense 
specification. 
decision of the military commission 
may appoint persons already serving 
with respect to issues of law to the 
as appellate military judges to the 
Art. 60, UCMJ, 10 U.S.C. §860. 
Court of Military Commission 
CMCR, or the President may 
Certain judgments of courts-martial, 
Review, a body composed of 
appoint judges subject to Senate 
depending on the severity of the 
appellate military judges who meet 
advice and consent. 
sentence, are directly appealable to 
the same qualifications as military 
10 U.S.C. §950f. 
the respective Service’s Court of 
judges or comparable qualifications 
Criminal Appeals, which reviews the 
for civilian judges. 
Once these appeals are exhausted, 
findings and sentence as approved by 
Former 10 U.S.C. §950f. 
the accused may appeal the final 
the convening authority, considering 
decision to the United States Court 
questions of both fact and law. In the  Once these appeals are exhausted, 
of Appeals for the District of 
event it sets aside a judgment, it may 
the accused may appeal the final 
Columbia Circuit, with respect to 
order a rehearing unless its act was 
decision to the United States Court 
the findings and sentence as 
based on insufficiency of evidence in 
of Appeals for the District of 
approved by the convening authority 
the record to support the findings, in  Columbia Circuit, which is limited to 
and as affirmed or set aside as 
which case it must order a dismissal. 
reviewing questions of law regarding 
incorrect in law by the USCMCR. 
“whether the final decision was 
The appel ate court may take action 
Art. 66, UCMJ, 10 U.S.C. §866. 
consistent with the standards and 
only with respect to matters of law, 
The accused may petition for review 
procedures specified in [the MCA] 
including the sufficiency of the 
of a Court of Criminal Appeals 
and to the extent applicable, the 
evidence to support the verdict. 
decision to the Court of Appeals for 
Constitution and the laws of the 
D.C. Cir. appel ate decisions may be 
the Armed Forces, a court of civilian 
United States.” D.C. Cir. appellate 
reviewed by the Supreme Court 
judges that is empowered to act only  decisions may be reviewed by the 
under writ of certiorari. 
with respect to matters of law. 
Supreme Court under writ of 
certiorari. 
10 U.S.C. §950g. 
Art. 67, UCMJ, 10 U.S.C. §867. 
Former 10 U.S.C. §950g. 
Other review by a civilian court, 
CAAF decisions, other than denials 
including review on petition of 
to hear a case, may be appealed to 
Other review by a civilian court, 
habeas corpus, is no longer expressly 
the Supreme Court through writ of 
including review on petition of 
prohibited. 
certiorari. 
habeas corpus, is expressly 
prohibited. 
Art. 67a, UCMJ, 10 U.S.C. §867a. 
Former 10 U.S.C. §950j (likely 
The writ of habeas corpus provides 
unconstitutional under Boumediene 
the primary means by which those 
v. Bush, 533 U.S. 723 (2008)(holding 
sentenced by military court, having 
§7 of the MCA to be invalid 
exhausted military appeals, can 
suspension of the writ of habeas 
challenge a conviction or sentence in 
corpus)). 
a civilian court. The scope of matters 
that a court will address is narrower 
than in challenges of federal or state 
convictions. 
Burns v. Wilson, 346 U.S. 137 
(1953). 
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Protection Against Excessive Penalties 
Military Commissions Act of 
General Courts Martial 
Military Commissions Act of 2006 
2009 
Death may only be adjudged for 
Military commissions may adjudge “any 
Few substantial changes from 
certain crimes where the 
punishment not forbidden by [the MCA] or  MCA 2006.  
defendant is found guilty by 
the law of war, including the penalty of 
unanimous vote of court-martial 
death….” 
10 U.S.C. §949m; 10 U.S.C. 
members present at the time of 
§950i. 
the vote. Prior to arraignment, 
Former 10 U.S.C. §948d. 
 In capital cases, the accused is 
the trial counsel must give the 
A vote of two-thirds of the members 
entitled to assistance of counsel 
defense written notice of 
present is required for sentences of up to 
with expertise in death penalty 
aggravating factors the 
10 years. Longer sentences require the 
cases, which may include civilian 
prosecution intends to prove. 
concurrence of three-fourths of the 
counsel paid for by the 
R.C.M. 1004. 
members present. The death penalty must 
government. 
be approved unanimously on a unanimous 
A conviction of spying during time  guilty verdict. Where the death penalty is 
10 U.S.C. §949a. 
of war under UMCJ Article 106 
sought, a panel of 12 members is required 
In the case of a capital case in 
carries a mandatory death 
(unless not “reasonably available,” in which 
which the accused pleads guilty, 
penalty. 
case the minimum is nine members). The 
the sentence must be approved 
death penalty must be expressly authorized 
10 U.S.C. §906. 
unanimously by members 
for the offense, and the charges must have 
present. 
Cruel and unusual punishments 
expressly sought the penalty of death. 
are prohibited. 
10 U.S.C. §949m. 
Former 10 U.S.C. §949m. 
Art. 55, UCMJ, 10 U.S.C. §855. 
An accused who is sentenced to 
An accused who is sentenced to death may 
death may neither waive nor 
In capital cases, “equal 
waive his appeal, but may not withdraw an 
withdraw an appeal. 
opportunity to obtain witnesses 
appeal. 
and other evidence” under Art. 
10 U.S.C. §950c. 
Former 10 U.S.C. §950c. 
46, UCMJ may entitle the accused 
 
to expert assistance at the 
The death sentence may not be executed 
Government’s expense. 
until the commission proceedings have 
been finally adjudged lawful and the time 
United States v. Kreutzer, 61 M.J. 
for filing a writ has expired or the writ has 
293 (CAAF 2005). 
been denied; and the President approves 
If a sentence extends to death, 
the sentence. 
dismissal, or a dishonorable or 
Former 10 U.S.C. §950i. 
bad conduct discharge, that part 
of the sentence may not be 
In capital cases, the accused is not entitled 
executed until required approval 
to assistance of counsel with expertise in 
is given and all appeals are 
death penalty cases. 
exhausted or waived. 
Former 10 U.S.C. §949a (civilian counsel 
Art. 71, UCMJ, 10 U.S.C. §871. 
only authorized if provided at no expense 
of the government). 
 
Author Contact Information 
 
Jennifer K. Elsea 
   
Legislative Attorney 
jelsea@crs.loc.gov, 7-5466 
 
 
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