Соответствующая норма
Practice Relating to Rule 65. Perfidy
Section I. Simulation of civilian status
Italy’s LOAC Elementary Rules Manual (1991) states: “It is prohibited to feign to belong to a protected category to invite the confidence of the enemy.” 
Italy, Regole elementari di diritto di guerra, SMD-G-012, Stato Maggiore della Difesa, I Reparto, Ufficio Addestramento e Regolamenti, Rome, 1991, § 46.