10 cm houfnice vz. 28 10 cm houfnice vz. 28 The 10 cm houfnice vz. 28 (howitzer model 28) was a Czech howitzer used in limited numbers by the Yugoslav Army during World War II. The Yugoslavians ordered twenty houfnice vz. 28 guns which they referred to as the 100 mm M.28. Guns captured from Yugoslavia by the Germans were given the designation 10 cm leFH 317(j). The origins of the houfnice vz. 28 began in 1928 at the Škoda Works in Pilsen. The design attempted to combine the howitzer and mountain gun roles into one weapon. The houfnice vz. 28 combined a two-wheeled box
Gun-type fission weapon Gun-type fission weapon Gun-type fission weapons are fission-based nuclear weapons whose design assembles their fissile material into a supercritical mass by the use of the "gun" method: shooting one piece of sub-critical material into another. Although this is sometimes pictured as two sub-critical hemispheres driven together to make a supercritical sphere, typically a hollow projectile is shot onto a spike which fills the hole in its center. Its name is a reference to the fact that it is shooting the material through an artillery barrel as if it were a projectile. Other potential arrangements may include firing two pieces into