Related Rule
Argentina
Practice Relating to Rule 36. Demilitarized Zones
Argentina’s Law of War Manual (1989) provides for the possibility of establishing demilitarized zones and refers to the conditions set out for this purpose in Article 60 of the 1977 Additional Protocol I. 
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, § 4.06.
Argentina’s Law of War Manual (1989) prohibits attacks on demilitarized zones by any means whatsoever and states that the prohibition of such attacks subsists only as long as such zones comply with the conditions set out in Article 60 of the 1977 Additional Protocol I. 
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, § 4.06.
The manual further qualifies attacks against demilitarized zones as grave breaches of IHL. 
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, § 8.03.