 Flamethrowers were primarily used against battlefield fortifications, bunkers, and other protected emplacements.A flamethrower projects a stream of flammable liquid, rather than flame, which allows bouncing the stream off walls and ceilings to project the fire into unseen spaces, such as inside bunkers or pillboxes.Typically, popular visual media depict the flamethrower as short-ranged and only effective for a few meters (due to the common use of propane gas as the fuel in flamethrowers in movies, for the safety of the actors).