相关规则
Italy
Practice Relating to Rule 65. Perfidy
Section B. Killing, injuring or capturing an adversary by resort to perfidy
Italy’s IHL Manual (1991) provides that is prohibited to kill or injure an enemy by treachery. 
Italy, Manuale di diritto umanitario, Introduzione e Volume I, Usi e convenzioni di Guerra, SMD-G-014, Stato Maggiore della Difesa, I Reparto, Ufficio Addestramento e Regolamenti, Rome, 1991, Vol. I, § 8(2).
Italy’s Law of War Decree (1938), as amended in 1992, states that it is prohibited to kill or injure an enemy by treachery. 
Italy, Law of War Decree, 1938, as amended in 1992, Article 35(2).