ANNEX TO THE CONVENTION : Regulations respecting the laws and customs of war on land #Section I : On belligerents #Chapter II : On prisoners of war - Art. 10.
Art. 10. Prisoners of war may be set at liberty on parole if the laws of their country authorize it, and, in such a case, they are bound, on their personal honour, scrupulously to fulfil, both as regards their own Government and the Government by whom they were made prisoners, the engagements they have contracted.
In such cases, their own Government shall not require of nor accept from them any service incompatible with the parole given.