 The Germans deployed one independent regiment , one separate motorized training brigade and 153 divisions for Barbarossa , which included 104 infantry , 19 panzer and 15 motorized infantry divisions in three army groups , nine security divisions to operate in conquered territories , four divisions in Finland and two divisions as reserve under the direct control of OKH . These were equipped with about 3 @,@ 350 tanks , 7 @,@ 200 artillery pieces , 2 @,@ 770 aircraft ( that amounted to 65 percent of the Luftwaffe ) , about 600 @,@ 000 motor vehicles and 625 @,@ 000 – 700 @,@ 000 horses . Finland slated 14 divisions for the invasion , and Romania offered 13 divisions and eight brigades over the course of Barbarossa . The entire Axis forces , 3 @.@ 8 million personnel , deployed across a front extending from the Arctic Ocean southward to the Black Sea , were all controlled by the OKH and organized into Army Norway , Army Group North , Army Group Center and Army Group South , alongside three luftflotten ( air fleets , the air force equivalent of army groups ) that supported the army groups : Luftflotte 1 for North , Luftflotte 2 for Center and Luftflotte 4 for South . 
