§ 64. A prisoner of war is in honor bound truly to state to the captor his rank, and not to assume a lower rank than belongs to him, in order to cause a more advantageous exchange; nor a higher rank, for the purpose of obtaining better treatment.
Offences to the contrary have been justly punished by the commanders of released prisoners.
§ 65. The surplus number of prisoners of war remaining after an exchange has taken place, is sometimes released either for the payment of a stipulated sum of money, or, in urgent cases, of provision, clothing, or other necessaries.
Such arrangement, however, requires the sanction of the highest authority.
§ 66. The exchange of prisoners of war is an act of convenience to both belligerents. If no general cartel has been concluded, it cannot be demanded by either of them. No belligerent is obliged to exchange prisoners of war.
A cartel is null and void so soon as either party has violated it.
§ 67. No exchange of prisoners shall be made except after complete capture, and after an accurate account of all, and a list of the captured officers, has been taken.
No exchange shall take place during or immediately after an engagement.
§ 68. A flag of truce cannot insist on being admitted.
It must always be admitted with great caution.