 From 1915, soldiers on both sides routinely sharpened the edges of entrenching shovels for use as weapons.In WW II, entrenching shovels were used in the brutal hand-to-hand fighting during the Battle of Stalingrad.Many modern military vehicles, airplanes, and weapons are equipped with ancillary weapons, including tanks (a large cannon is the main weapon, but the tank also has a heavy machine gun as an ancillary weapon), jet fighters (air-to-air missiles and/or bombs are the main armament, but most fighters also have a autocannon as an ancillary weapon), bombers (a World War II-era B-17 Flying Fortress' main armament was up to of bombs, but it also had up to thirteen machine guns as ancillary weapons, for defense against enemy fighter planes) and even assault rifles (the bayonet is the ancillary weapon; as well, even the wooden rifle butt can be used as an improvised, last resort weapon).