ICRC databases on international humanitarian law
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Project of an International Declaration concerning the Laws and Customs of War. Brussels, 27 August 1874.
Prisoners of war - Art. 29.
Art. 29. Every prisoner of war is bound to give, if questioned on the subject, his true name and rank, and if he infringes this rule, he is liable to a curtailment of the advantages accorded to the prisoners of war of his class.