It was the centre for research and development of the Weimar Republic and later the Third Reich for weapons, ammunition and army equipment to the German Reichswehr and then Wehrmacht.
The task of overseeing Germany's gigantic pre-World War II rearmament program was given to the Heeresabnahmestelle (the Army Acceptance Organization, commonly referred to as the Abnahme), a subsidiary of the Heereswaffenamt.
Inspections were carried out according to detailed guidelines called "Technische Lieferbedingungen" (TLs) prepared by the various Waffenprüfämter (WaPrüf) departments When the rearmament program began, Waffenamt inspection departments were established in each factory and armourers were encouraged to apply for positions there.
The course ended with a test for Technical Inspector which raised the rank of each successful applicant to that of Oberleutnant (First Lieutenant).
Waffenamt code (WaA) is the German inspection proof mark and can be found on firearms and equipment.