Related Rule
Australia
Practice Relating to Rule 85. The Use of Incendiary Weapons against Combatants
In 1973, with respect 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, Australia stated that it “reaffirms the principles [in international agreements prohibiting the employment in war of weapons calculated to cause unnecessary suffering] and their application to the use of all classes of weapons, particular napalm”. It further stated that it “does not possess aerial or mechanized napalm-type weapons and does not intend to acquire them”. 
Australia, Reply of 21 September 1973 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, 11 October 1973, p. 4.
Australia’s Commanders’ Guide (1994) states, with reference to the 1980 Protocol III to the Convention on Certain Conventional Weapons: “There are no prohibitions on the use of incendiary weapons against combatants.” 
Australia, Law of Armed Conflict, Commanders’ Guide, Australian Defence Force Publication, Operations Series, ADFP 37 Supplement 1 – Interim Edition, 7 March 1994, § 935.