Related Rule
New Zealand
Practice Relating to Rule 11. Indiscriminate Attacks
New Zealand’s Military Manual (1992) provides: “Indiscriminate attacks are prohibited.” 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 517.
The manual also states that “launching an indiscriminate attack affecting the civilian population or civilian objects in the knowledge that such attack will cause excessive loss of life, injury to civilians or damage to civilian objects” constitutes a grave breach. 
New Zealand, Interim Law of Armed Conflict Manual, DM 112, New Zealand Defence Force, Headquarters, Directorate of Legal Services, Wellington, November 1992, § 1703(3).
New Zealand’s Geneva Conventions Act (1958), as amended in 1987, provides:
Any person who in New Zealand or elsewhere commits, or aids or abets or procures the commission by another person of, a grave breach … of [the 1977 Additional Protocol I] is guilty of an indictable offence. 
New Zealand, Geneva Conventions Act, 1958, as amended in 1987, Section 3(1).
In its written statement submitted to the ICJ in the Nuclear Weapons case in 1995, New Zealand stated, with reference to customary international law: “It is prohibited to use indiscriminate methods and means of warfare which do not distinguish between combatants and civilians and other non-combatants.” 
New Zealand, Written statement submitted to the ICJ, Nuclear Weapons case, 20 June 1995, § 71.