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 VIII : Armistice -- Capitulation - Art. 139.
Art. 139. An armistice is binding upon the belligerents from the day of the agreed commencement; but the officers of the armies are responsible from the day only when they receive official information of its existence.