Self-propelled Guns

Assault Guns
The Sturmgeschütz III and IV were the first assault guns designed to give infantrymen close fire support. The StuG III/IV were continuously upgunned and some could even fight as tank killers.
The Sturmpanzer IV Brummbär was specifically produced to fight in street battles after the Stalingrad disaster. The Brummbär, with heavy armor and powerful firepower, functioned very successfully for its designed role.
The Panzermörser Sturmtiger was even more powerful than the Brummbär, with massive armor and firepower. When the Sturmtiger was ready, however, Germany was no longer in a position to lay siege to another city.

Artillery
The 150mm sIG 33 was the first self-propelled artillery. It was an improvised design but served fairly well and proved that the basic concept of mechanized artillery was sound.
The sIG auf Gw II was basically the same as the sIG 33 on a PzKpfw II chassis. Only a dozen were built and they served in North Africa.
The sIG auf Gw 38(t) was the same as its two predecessors except the gun sat on top of a PzKpfw 38(t) chassis. Production continued until 1944.
The Wespe was designed to give mobile fire support to the Panzer divisions. It used the Army's standard field howitzer and fought with considerable success.
The Panzerhaubitze III/IV Hummel was the last and most successful of the self-propelled artilleries. With a reliable chassis and a powerful field howitzer the Hummel was able to provide artillery support to mechanized units on the move.

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