Related Rule
Italy
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section A. Constant care to spare the civilian population, civilians and civilian objects
Italy’s LOAC Elementary Rules Manual (1991) states: “Constant care shall be taken to spare the civilian population, civilian persons and civilian objects.” 
Italy, Regole elementari di diritto di guerra, SMD-G-012, Stato Maggiore della Difesa, I Reparto, Ufficio Addestramento e Regolamenti, Rome, 1991, § 43.