Related Rule
Argentina
Practice Relating to Rule 121. Location of Internment and Detention Centres
Argentina’s Law of War Manual (1969) provides: “Prisoners of war may be interned only in premises located on land and affording every guarantee of hygiene and healthfulness.” 
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, § 2.019.
Argentina’s Law of War Manual (1989) provides: “Prisoners of war may be interned only in premises located on land and affording every guarantee of hygiene and healthfulness.” It adds: “No prisoners may be detained in areas where they may be exposed to the fire of the combat zone.” 
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, § 3.12.