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Canada
Practice Relating to Rule 85. The Use of Incendiary Weapons against Combatants
Canada’s Code of Conduct (2001) provides that the use of “tracer rounds for other than marking” is forbidden. 
Canada, Code of Conduct for CF Personnel, Office of the Judge Advocate General, 4 June 2001, Rule 3, § 10(c).
Canada’s Code of Conduct (2005) provides that the use of “tracer rounds for other than marking” is forbidden. 
Canada, Code of Conduct for CF Personnel, Office of the Judge Advocate General, 2005, Rule 3, § 10(c).
In 1973, in response to Resolution 2932 A (XXVII) in which the UN General Assembly asked States to comment on the report of the UN Secretary-General on napalm and other incendiary weapons and all aspects of their possible use, Canada stated:
Both considerations of limitations on the use of specific weapons, such as napalm and other incendiary weapons, and efforts to promote the further development of the international humanitarian law of armed conflict, should be undertaken quickly and effectively. 
Canada, Reply sent to the UN Secretary-General, reprinted in Report of the Secretary-General on napalm and other incendiary weapons and all aspects of their possible use, UN Doc. A/9207/Add.1, 11 October 1973, p. 3.
Canada’s LOAC Manual (1999) states: “The use of incendiary weapons against combatants is not prohibited unless such use results in superfluous injury or unnecessary suffering.” 
Canada, The Law of Armed Conflict at the Operational and Tactical Level, Office of the Judge Advocate General, 1999, p. 5-4, § 35.
Canada’s LOAC Manual (2001) states in its chapter entitled “Restrictions on the use of weapons”: “The use of incendiary weapons against combatants is not prohibited unless such use results in superfluous injury or unnecessary suffering.” 
Canada, The Law of Armed Conflict at the Operational and Tactical Levels, Office of the Judge Advocate General, 13 August 2001, § 521.3.