Соответствующая норма
Practice Relating to Rule 117. Accounting for Missing Persons
Section A. Search for missing persons
Argentina’s Law of War Manual (1989) provides: “At all times, particularly after an engagement, the parties to the conflict shall, without delay, take all possible measures to search for … missing persons.” 
Argentina, Leyes de Guerra, PC-08-01, Público, Edición 1989, Estado Mayor Conjunto de las Fuerzas Armadas, aprobado por Resolución No. 489/89 del Ministerio de Defensa, 23 April 1990, § 2.05; see also § 6.01.