Andrew W. Young, The government class book
“ Prisoners of war are detained to prevent their returning to join the enemy, or to obtain from their government a just satisfaction as the price of their liberty. Prisoners may be kept till the end of the war. Then, or at any time during the war, the government may exchange them for its own soldiers taken prisoner by the enemy; or a ransom may be required for their release. It is the duty of the government to procure, at its own expense, the release of its citizens. ”
