The Neubau-Fahrzeug was a series of vehicles manufactured by Germany around 1934, in an attempt to produce a heavy Tank. Neubau-Fahrzeug translating into 'New Construction Vehicle'. The tank was multi-turreted, the main turret being armed with a 75mm KwK L/24 main gun, and also a smaller 37mm KwK L/45. Two manufacturers produced examples, Krupp and Rheinmetall, each differing only in the placement of the secondary gun in relation to the main one - Krupp had their 37mm next to the main gun, and Rheinmetall had theirs above the main gun. In total only five vehicles were produced and used mainly for propaganda purposes, although apparently three of them were used in the invasion of Norway.