A flamethrower is a device designed to project a long stream of fire. It typically consists of a fuel tank, a propellant, and a nozzle. When activated, the flamethrower ignites the fuel and expels it, creating a fiery jet. Flamethrowers have been used in military applications, particularly during World War I and World War II, for clearing obstacles and in combat. In addition to military use, flamethrowers have applications in agriculture, such as controlled burns for land management. They are also used in special effects for movies and entertainment. However, due to their dangerous nature, flamethrowers are heavily regulated in many regions.