Panzer division
The mainstay of the "Panzerwaffe" was the Panzer division. These consisted of a panzer brigade (two tank regiments) and two motorized or mechanized infantry regiments. All forces of a Panzer division were mobile. Support elements included self-propelled artillery, self-propelled anti-tank, and armored reconnaissance cars. After the campaigns in Poland and France, the Panzer divisions were reduced in size, with only one Panzerregiment per Division. This move was taken to allow the creation of several new divisions with the available tanks.