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Nigeria
Practice Relating to Rule 15. The Principle of Precautions in Attack
Section A. Constant care to spare the civilian population, civilians and civilian objects
Nigeria’s Military Manual (1994) lists as one of the basic principles in the conduct of operations, every commander’s duty “to spare the civilian population, civilian persons and civilian objects”. The manual adds: “When planning action that could endanger civilian persons and objects therefore, care and precaution must be emphasised and exercised in the conduct of the war.” 
Nigeria, International Humanitarian Law (IHL), Directorate of Legal Services, Nigerian Army, 1994, p. 42, § 11.
Nigeria’s Military Manual (1994) and Soldiers’ Code of Conduct state: “Civilian persons and objects must be spared.” 
Nigeria, International Humanitarian Law (IHL), Directorate of Legal Services, Nigerian Army, 1994, p. 39, § 5(c); Code of Conduct for Combatants, “The Soldier’s Rules”, Nigerian Army, undated, § 3.