Соответствующая норма
Italy
Practice Relating to Rule 64. Conclusion of an Agreement to Suspend Combat with the Intention of Attacking by Surprise the Adversary Relying on It
Italy’s IHL Manual (1991) provides that in case of a violation of an armistice, the local commander can react as circumstances require. Only the supreme commander, with the consent of the government, can denounce an armistice or order the resumption of hostilities. 
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, § 77.
Hostile acts committed by individuals on their own initiative are not considered as violations of the armistice agreement, but punishment and indemnity can be demanded. 
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, § 79.
Italy’s Law of War Decree (1938), as amended in 1992, provides that in case of a violation of an armistice, the local commander can react as circumstances require. Only the supreme commander can denounce an armistice or order to resume hostilities. 
Italy, Law of War Decree, 1938, as amended in 1992, Article 81.
Hostile acts committed by individuals on their own initiative are not considered as violations of the armistice agreement, but punishment and indemnity can be demanded. 
Italy, Law of War Decree, 1938, Article 82.
Italy’s Wartime Military Penal Code (1941) punishes any commander who, without justification, commits hostile acts against the enemy during a truce or an armistice, except in case of necessity. 
Italy, Wartime Military Penal Code, 1941, Article 170.