Abteilung (shortened Abt) is a German language word often used when referring to German or Swiss military formations (although the German uses the term in a more civilian fashion, e.g. Abteilung = office department). Depending on its usage this term could mean detachment, department or battalion. In the Second World War, the term Abteilung generally referred to battalion-sized formations in the armoured, cavalry, reconnaissance and artillery arms of the Heer and Waffen SS. Exceptions to the word meaning battalion were Army-Abteilung and Korps-Abteilung. In these cases terms Army Detachment and Corps Detachment can be substituted.
See more at Wikipedia.org...