How did Operation Barbarossa change the Wehrmacht’s command structure?

Operation Barbarossa, the 1941 invasion of the Soviet Union, fundamentally altered the Wehrmacht’s operational organization by formalizing a split in command responsibilities.1

Following the invasion, the Oberkommando des Heeres (OKH; Army High Command) became the de facto theater command specifically for the Eastern Front. Conversely, the Oberkommando der Wehrmacht (OKW; Armed Forces High Command) assumed responsibility for managing military operations in German-occupied western Europe and North Africa.12

This structural shift intensified as the war progressed. In December 1941, Adolf Hitler forced the resignation of Field Marshal Walther von Brauchitsch and assumed personal command of the Russian front. This division of authority between the OKH and OKW created a fragmented and often inefficient command structure, where theater commanders in the West, such as Gerd von Rundstedt, frequently lacked unified control over naval, air, and armored units, which often reported directly to Hitler.12