Siemens-Schuckert (or Siemens-Schuckertwerke) was a German electrical engineering company headquartered in Berlin, Erlangen and Nuremberg that was incorporated into the Siemens AG in 1966.

They also produced aircraft engines under the Siemens-Halske brand, which evolved into their major product line after the end of World War I.

[3] Siemens-Schuckert designed a number of heavy bombers early in World War I, building a run of seven Riesenflugzeug.

The D.I fighter also formed the basis for a series of original designs, which by the end of 1917 had reached a peak in the Siemens-Schuckert D.III, which went into limited production in early 1918, and found use in home defense units as an interceptor, due to its outstanding rate of climb.

Siemens-Schuckert immediately disappeared, but Siemens-Halske continued sales of the Sh.III and started development of smaller engines for the civilian market.

Siemens-Halske no longer had any competitive engines for the larger end of the market, and to address this they negotiated a license in 1929 to produce the 9-cylinder Bristol Jupiter IV.

Although rather outdated in terms of design, by this time the engine had matured into a highly reliable powerplant despite its comparatively poor fuel economy, and 5,500 were produced until the lines shut down in 1944.

By the start of the war its 1,000 hp was already at the low end of the performance scale, and use was limited to transports and bombers.

The -002 used an advanced contra-rotating compressor for added efficiency, while the -003 used a simpler compressor/stator system that remains in use in modern designs today.

The main factory to which Brobrek was attached was a site designed to make synthetic rubber and gasoline, and it was owned by IG Farben, one of the largest chemical combines in Germany during the war.

They were all making not just small side arms such as pistols and machine guns but also large weapons like artillery as well as U-boat and aircraft parts.