Related Rule
Practice Relating to Rule 10. Civilian Objects’ Loss of Protection from Attack
Argentina’s Law of War Manual (1989) provides: “In case of doubt concerning the military use of an object which is usually dedicated to civilian purposes, that object must be considered as civilian.” 
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, § 4.45; see also § 4.02(2).