i know there are a these are the attachment points: sprite, medium, large. These are the modifyers. rallypoint, first, second, third, fouth, fifth, and sixth
i am imagining those are for the fire models that go onto buildings when they get damaged: these are the fire models for undead, normal, and nightelf buildings i hope this helps!
Environment\SmallBuildingFire\SmallBuildingFire0.mdl
Environment\SmallBuildingFire\SmallBuildingFire1.mdl
Environment\SmallBuildingFire\SmallBuildingFire2.mdl
Environment\LargeBuildingFire\LargeBuildingFire0.mdl
Environment\LargeBuildingFire\LargeBuildingFire1.mdl
Environment\LargeBuildingFire\LargeBuildingFire2.mdl
Environment\NightElfBuildingFire\ElfSmallBuildingFire0.mdl
Environment\NightElfBuildingFire\ElfSmallBuildingFire1.mdl
Environment\NightElfBuildingFire\ElfSmallBuildingFire2.mdl
Environment\NightElfBuildingFire\ElfLargeBuildingFire0.mdl
Environment\NightElfBuildingFire\ElfLargeBuildingFire1.mdl
Environment\NightElfBuildingFire\ElfLargeBuildingFire2.mdl
Environment\UndeadBuildingFire\UndeadSmallBuildingFire0.mdl
Environment\UndeadBuildingFire\UndeadSmallBuildingFire1.mdl
Environment\UndeadBuildingFire\UndeadSmallBuildingFire2.mdl
Environment\UndeadBuildingFire\UndeadLargeBuildingFire0.mdl
Environment\UndeadBuildingFire\UndeadLargeBuildingFire1.mdl
Environment\UndeadBuildingFire\UndeadLargeBuildingFire2.mdl