1889-1935

Founding of the “Rheinische Metallwaaren- und Maschinenfabrik Aktiengesellschaft” by metals and mining conglomerate Hoerder Bergwerks- und Hüttenverein; operations were established and expanded under the direction of the engineer Heinrich Ehrhardt.

A plant is set up in Düsseldorf-Derendorf

Presentation of the first barrel recoil cannon fit for field service

Acquisition of a 1040-hectare site in Unterlüß in the Lüneburg Heath, establishment of a company-owned firing range for the demonstration of large-caliber guns.

Acquisition of Sömmerda-based Munitions- und Waffenfabrik from Dreyse

Changeover to nonmilitary products (locomotives, steam plows, office equipment) because of the terms and conditions laid out in the Treaty of Versailles

Resumption of military production

Takeover of locomotive manufacturer August Borsig GmbH
as a future arms production plant in Berlin