77. A prisoner of war who escapes, may be shot or otherwise killed in his flight, but neither death nor any other punishment shall be inflicted upon him, simply for his attempt to escape, which the law of war does not consider a crime. Stricter means of security shall be used after an unsuccessful attempt at escape. * * * 109. 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 voidable as soon as either party has violated it. 119. Prisoners of war may be released from captivity by exchange and under certain circumstances, also by parole. 120. The term parole designates the pledge of individual good faith and honor to do, or to omit doing, certain acts after he who gives his parole shall have been dismissed wholly or partially from the power of the captor. 121. The pledge of the parole is always an individual but not a private act. 133. No prisoner of war can be forced by the hostile government to parole himself, and no government is obliged to parole prisoners of war, or to parole all captured officers, if it paroles any. As the pledging of the parole is an individual act, so is paroling, on the other hand, an act of choice on the part of the belligerent. XI. From the evidence obtained from different sources, and from the results, it may be properly reasoned that there was a secret and fixed intent on the part of the cabal at Richmond to weaken the Federal armies by destroying the prisoners by starvation and exposure.