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 VI : Exchange of prisoners -- Flags of truce -- Flags of protection - Art. 111.
Art. 111. The bearer of a flag of truce cannot insist upon being admitted. He must always be admitted with great caution. Unnecessary frequency is carefully to be avoided.