Treaties, States Parties and Commentaries
Treaties and Documents
Geneva Conventions of 1949 and Additional Protocols, and their Commentaries
Historical Treaties and Documents
Instructions for the Government of Armies of the United States in the Field (Lieber Code). 24 April 1863.
Section V : Safe-conduct -- Spies -- War-traitors -- Captured messengers -- Abuse of the flag of truce - Art. 104.
Art. 104. A successful spy or war-traitor, safely returned to his own army, and afterwards captured as an enemy, is not subject to punishment for his acts as a spy or war-traitor, but he may be held in closer custody as a person individually dangerous.