The ROKS-2 (Ranzewüj ognemjod K S-2) is a soviet flamethrower developed in the early 1930s to equip the Red Army. The ROKS-2 was not essentially different from other flamethrowers used in World War II, unless the issue of appearance: as has been observed in a War that any soldier carrying one became immediately the preferred target of defensive fire, the Soviets tried to hide his weapon, giving it the shape of a rifle and the tank shaped like a backpack. The ROKS 3 was basically the same gun, made in a simplified manner during the war, without the disguise of backpack.