 Unlike the flamethrowers of the other powers during World War II, the Soviets were the only ones to consciously attempt to camouflage their infantry flamethrowers.With the ROKS-2 flamethrower this was done by disguising the flame projector as a standard issue rifle, such as the Mosin–Nagant, and the fuel tanks as a standard infantryman's rucksack.This was to try to stop the flamethrower operator from being specifically targeted by enemy fire.