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1949 Conventions and Additional Protocols, and their Commentaries
Historical Treaties and Documents
The Laws of War on Land. Oxford, 9 September 1880.
Part II : Application of general principles #I. Hostilities #A. Rules of conduct with regard to individuals #(c) The sick and wounded, and the sanitary service - Art. 16.
Art. 16. Measures should be taken to assure, if possible, to neutralized persons who have fallen into the hands of the enemy, the enjoyment of fitting maintenance.