 An L6 Lf flametank was also developed using the L6/40 light tank platform.Japan used man-portable flamethrowers to clear fortified positions, in the Battle of Wake Island, Corregidor, Battle of the Tenaru on the Guadalcanal and Battle of Milne Bay.The British World War II army flamethrowers, "Ack Packs", had a doughnut-shaped fuel tank with a small spherical pressurizer gas tank in the middle.