Related Rule
Argentina
Practice Relating to Rule 49. War Booty
Argentina’s Law of War Manual (1969) states, in a paragraph on war booty:
All movable public property captured or found on the battlefield becomes the property of the capturing state. … The victorious armed forces may only take possession of privately owned weapons and military documents if the latter are found or seized on the battlefield. 
Argentina, Leyes de Guerra, RC-46-1, Público, II Edición 1969, Ejército Argentino, Edición original aprobado por el Comandante en Jefe del Ejército, 9 May 1967, § 1.020.