Related Rule
Poland
Practice Relating to Rule 85. The Use of Incendiary Weapons against Combatants
Section B. The use of incendiary weapons against combatants in particular
At the Preparatory Conference on the Convention on Certain Conventional Weapons in 1979, during the general debate on the second proposal made by Australia and the Netherlands, Poland stated that it hoped that
the extensive debate on the total prohibition of the use of such weapons in inhabited areas would eventually lead to the elimination of at least the most drastic and indiscriminate weapons in that category, and might help to restrict the use of incendiaries against military personnel when they inflicted unnecessary suffering. 
Poland, Statement at the Preparatory Conference on the Convention on Certain Conventional Weapons, UN Doc. A/CONF.95/PREP.CONF/II/ SR.28, 18 April 1979, p. 2, § 2.