In Ex parte Quirin, 317 U.S. 1 (1942), the Supreme Court upheld President Franklin D. Roosevelt’s authority to try eight German saboteurs before a military commission, holding that enemy belligerents who cross into the United States in civilian dress to wage war are unlawful combatants who can be tried outside the civilian courts, even when those courts are open. The decision came down fast, in the middle of World War II, and it drew a doctrinal line between lawful and unlawful combatants that still governs modern military detention law.1Justia U.S. Supreme Court Center. Ex Parte Quirin, 317 U.S. 1 (1942)
How the Case Reached the Supreme Court
In June 1942, Germany launched Operation Pastorius. Eight men, all born in Germany and all former U.S. residents, trained at a sabotage school near Berlin and shipped out by submarine to the American coast. Four came ashore near Amagansett on Long Island shortly after midnight on June 13, 1942. Four more landed at Ponte Vedra Beach near Jacksonville, Florida, on June 17. Each team wore German military uniforms as they landed, buried the uniforms with caches of explosives, and changed into civilian clothes. Their assignment was a two-year campaign against railroads, bridges, aluminum plants, and other war infrastructure.2Federal Bureau of Investigation. Nazi Saboteurs and George Dasch
The mission collapsed almost immediately. One saboteur, George Dasch, contacted the FBI and turned himself in. All eight were in custody by June 27, 1942, before any sabotage occurred.2Federal Bureau of Investigation. Nazi Saboteurs and George Dasch
On July 2, 1942, Roosevelt issued Proclamation 2561. It declared that enemies entering the country through its coastal defenses to commit sabotage or espionage were subject to the law of war and to the jurisdiction of military tribunals, and it denied them access to civilian courts.3Federal Register. Proclamation 2561 – Denying Certain Enemies Access to the Courts of the United States Roosevelt then appointed a seven-general military commission to try the men on charges of violating the law of war, spying, and conspiracy. Defense counsel filed habeas petitions in federal district court arguing that the president had exceeded his power and that civilian courts were available. The district court denied relief, and the Supreme Court took the case on direct expedited review because of its public importance.1Justia U.S. Supreme Court Center. Ex Parte Quirin, 317 U.S. 1 (1942)
What the Court Held
On July 31, 1942, the Court denied the habeas petitions in a per curiam order. The full opinion, written by Chief Justice Harlan Fiske Stone, followed later. Justice Murphy took no part in the decision.1Justia U.S. Supreme Court Center. Ex Parte Quirin, 317 U.S. 1 (1942)
The Court ruled that Congress, through the Articles of War, had authorized military commissions to try offenses against the law of war. Stone pointed to Article 15, which recognized commissions as the appropriate forum for law-of-war offenses not ordinarily heard by courts-martial, along with provisions covering harboring or corresponding with the enemy and spying. He also cited an 1806 Act of Congress imposing the death penalty on alien spies, treating it as a longstanding construction of the Constitution confirming that law-of-war offenses could be tried without a jury.4Library of Congress. Ex Parte Quirin, 317 U.S. 1 (1942)
Lawful and Unlawful Combatants
The heart of the opinion is a classification. The Court held that the law of war distinguishes “between the armed forces and the peaceful populations of belligerent nations and also between those who are lawful and unlawful combatants.”4Library of Congress. Ex Parte Quirin, 317 U.S. 1 (1942)
Lawful combatants, such as uniformed soldiers who follow the laws of war, can be captured and held as prisoners of war. Unlawful combatants can be captured and detained too, and they face an additional consequence: trial and punishment by military tribunals for the acts that made their belligerency unlawful. The Court offered two classic examples. One was the spy who crosses military lines secretly and without uniform to collect intelligence. The other was the enemy combatant who comes through the lines in civilian clothes to destroy life or property.
The saboteurs fit the second example directly. They had crossed U.S. coastal defenses in civilian dress, sent by a hostile government, intending to destroy war infrastructure. That conduct made them unlawful combatants subject to a military commission.
Why Jury Trial Rights Did Not Apply
The petitioners argued they were entitled to a grand jury indictment and a jury trial under the Fifth and Sixth Amendments. Stone rejected this. Grand juries and jury trials were familiar procedures in the civilian courts that existed when the Constitution was adopted, but they were, in his words, “procedures unknown to military tribunals.” The amendments preserved jury trial rights where they had been recognized at common law, and did not extend them to military commissions trying law-of-war offenses. The Court described this reading as consistent since the founding.1Justia U.S. Supreme Court Center. Ex Parte Quirin, 317 U.S. 1 (1942)
The Citizenship Argument
One of the eight, Herbert Haupt, claimed to be a U.S. citizen. He had come to the country at age five, and the argument was that he had gained citizenship through his parents’ naturalization while he was still a minor.5Legal Information Institute. Ex Parte Quirin
The Court ruled that citizenship “does not relieve him from the consequences of a belligerency which is unlawful because in violation of the law of war.” An American citizen who associates with an enemy military force, enters the country with its aid and direction, and intends to commit hostile acts is an enemy belligerent under the Hague Convention and the law of war. The Court found it unnecessary even to resolve whether Haupt had actually retained his citizenship, because the answer would not have changed the outcome.4Library of Congress. Ex Parte Quirin, 317 U.S. 1 (1942)
Why Milligan Did Not Save the Petitioners
The defense leaned on Ex parte Milligan (1866), the Civil War case in which the Court held that a civilian could not be tried by a military tribunal where the civilian courts were open. Milligan, an Indiana resident, was tried by a military commission for conspiracy while Indiana’s federal courts operated normally. He was not a member of any armed force.6Justia U.S. Supreme Court Center. Ex Parte Milligan, 71 U.S. 2 (1866)
The Quirin Court acknowledged Milligan but distinguished it. Milligan was a civilian citizen with no connection to an enemy military force. The Quirin petitioners were enemy belligerents directed by a hostile government to enter the country to commit war crimes. Stone wrote that the commission’s jurisdiction stood “notwithstanding the fact that, ever since their arrest, the courts in the jurisdictions where they entered the country and where they were arrested and held for trial were open and functioning normally.” Open civilian courts, in short, do not automatically shield an enemy combatant charged with violating the law of war.1Justia U.S. Supreme Court Center. Ex Parte Quirin, 317 U.S. 1 (1942)
What Happened to the Eight Men
The commission convicted all eight and sentenced all of them to death. Attorney General Francis Biddle and FBI Director J. Edgar Hoover then asked Roosevelt to commute the sentences of George Dasch and Ernest Burger, the two who had cooperated. Roosevelt agreed. Dasch’s sentence was reduced to 30 years at hard labor, and Burger’s to life imprisonment. The other six were executed in the electric chair at the District of Columbia Jail on August 8, 1942.2Federal Bureau of Investigation. Nazi Saboteurs and George Dasch
Why Quirin Still Matters
The case faded from public attention after the war and returned to prominence after September 11, 2001, when the federal government again began detaining people as enemy combatants and turning to military commissions.
In Hamdi v. Rumsfeld (2004), the Supreme Court relied in part on Quirin when it held that U.S. citizens could be designated as enemy combatants. But it also went further than Quirin had, ruling that due process required a detainee to have a chance to challenge his combatant status before a neutral tribunal.7Justia U.S. Supreme Court Center. Hamdi v. Rumsfeld, 542 U.S. 507 (2004)
In Hamdan v. Rumsfeld (2006), the Court returned to Quirin’s statutory reasoning. When Congress codified the Articles of War into the Uniform Code of Military Justice in 1950, it kept the key provision (now Article 21 of the UCMJ) specifically because the Court had already construed it in Quirin. Hamdan accepted that military commissions could be lawful in principle but struck down the particular commission structure the Bush administration had built, finding it did not comply with the UCMJ and the Geneva Conventions.8Justia U.S. Supreme Court Center. Hamdan v. Rumsfeld, 548 U.S. 557 (2006)
Quirin’s core holding remains good law: enemy combatants who violate the law of war can be tried by military commission rather than in civilian court. What has changed is the procedural floor. Later decisions require that detainees have a meaningful chance to contest their combatant designation and that commissions themselves comply with statutory and treaty obligations Quirin did not address.