A Sturmgeschütz consisted of two primary components; the chassis (including the drive components) and the superstructure (with the armament). In fact, the chassis was produced, tested and accepted without the superstructure. The chassis was later returned to the factory for the superstructure to be mounted. While the individual components came from different manufacturers, they were all assembled in one of the facilities below.
Daimler-Benz AG, Werk 40, Berlin-Marienfelde – Primarily produced the Panzerkampfwagen III and later (1943) the Panzerkampfwagen V (Panther); DB Werk 40 produced 40 Sturmgeschütz, Ausf. A in 1940 and 1 Sturmgeschütz IV prototype in December 1943.
Altmärkisch Ketterwerk GmbH, Berlin-Tegel (Alkett) – Alkett began production of the Panzerkampfwagen III in 1938 which continued until 1942.In 1940 assembly of the Sturmgeschütz III was added.Production on the StuG III continued until the end of the war in 1945.Complete StuG’s were produced in Borsigwalde up to November 1943 when the plant was extensively damaged by an Allied air attack.Production was resumed the following January.To make up for the shortfall in production at Borsigwalde, Alkett entered into an agreement with Reichsbahn-Ausbesserungswerk Falkensee (near Spandau).The Falkensee works only produced chassis for the StuG (to replace the Borsidwalde production), which were fittedsuperstructures and completed at the Spandau works.
Mühlenbau und Industrie AG (MIAG) Amme-Werke, Braunschweig – MIAG began producing Panzerkampfwagen III’s in the fall of 1939.The last Panzerkampfwagen III was delivered in May 1943.MIAG’s Sturmgeschütz production began in February 1943 and the final vehicle was delivered in May, 1945.In 1943 MIAG began work on the Jagdpanther.Production began in January, 1944 and continued to the end of the war.The monthly production at MIAG was rated at 150 Sturmgeschütz and 125 Jagdpanther.
Fried.Krupp-Grusonwerk AG, Magdeburg-Buckau – Krupp completed the first two Panzerkampfwagen IV’s in 1937 and remained the sole manufacturer of the Panzerkampfwagen IV until 1941.Production of the Panzerkampfwagen IV was converted to the Sturmgeschütz IV in December, 1943.Krupp continued to produce the Sturmgeschütz IV until the end of the war.Krupp-Gruson also manufactured the Panzerkampfwagen IV chassis for the Flakpanzer IV (Möbelwagen and Ostwind).
Sources SPIELBERGER, Walter J.Sturmgeschutz & Its Variants, (Spielberger German Armor & Military Vehicles Series, Vol 2). Schiffer Publishing, 1993