Règle correspondante
Practice Relating to Rule 8. Definition of Military Objectives
Section D. Weapons and weapon systems
Peru’s IHL and Human Rights Manual (2010) states: “Unless they enjoy immunity from attack, enemy warships and aircraft as well as enemy auxiliary vessels and aircraft are military objectives and can be attacked.” 
Peru, Manual de Derecho Internacional Humanitario y Derechos Humanos para las Fuerzas Armadas, Resolución Ministerial No. 049-2010/DE/VPD, Lima, 21 May 2010, § 121(c), p. 313.