Video: German offensive begins (at 0:00)

(Sunday, June 28, 1942, part of the Eastern Front of World War II) — Nazi Germany started its strategic summer offensive in southern Russia today against the Soviet Union, codenamed Case Blue, with Fourth Panzer Army starting its drive towards Voronezh.  

A continuation Operation Barbarossa, the operation involved a two-pronged attack against the rich oilfields of Baku as well as an advance in the direction of Stalingrad along the Volga River, to cover the flanks of the advance towards Baku.