The Minengeschoß ('mine-shell') was a high-capacity autocannon ammunition originally developed in Germany and used in the Luftwaffe's larger caliber aircraft armament during World War II. This new type of high-explosive shell differed from conventional H.E. ammunition in that it had much thinner walls. The shell was drawn from high-quality steel, instead of having the explosives cavity drilled into a solid shot, which allowed thinner-wall construction and therefore a far greater amount of explosive filler.