15 cm hrubá houfnice vz. 25 broke down into two loads for transport. It fired a shell. 15 cm hrubá houfnice vz. 25 The 15 cm hrubá houfnice vz. 25 (Heavy howitzer model 25) was a Czech heavy howitzer used in the Second World War. It was taken into Wehrmacht service as the 15 cm sFH 25(t). Slovakia had 126 in inventory. Intended to replace the various Austro-Hungarian heavy howitzer that the Czechs had inherited, they began a program to develop a new howitzer shortly after achieving independence in 1919. It didn't reflect many of the lessons of World War I as it retained a 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