Section V : On the rights and duties of the belligerent with regard to individuals - Art. 86.
Art. 86. Each belligerent shall send, as early as possible, to the authorities of their country, their navy, or their army the military marks or documents of identity found on the dead and the description of the sick and wounded picked up by him.
The belligerents shall keep each other informed as to internments and transfers as well as to admissions into hospitals and the deaths which have occurred among the sick and wounded in their hands. They shall collect, in order to have them forwarded to the persons concerned by the authorities of their own country, all the objects of personal use, valuables, letters, etc., which are found in the captured or seized ships, or which have been left by the sick or wounded who died in hospital.