Case Blue
The battle was an overwhelming German victory, with 280,000 Soviet casualties compared to just 20,000 for the Germans and their allies. The German Army Group South pressed its advantage, encircling the Soviet 28th Army on 13 June in Operation Wilhelm and pushing back the 38th and 9th Armies on 22 June in Operation Fridericus II as preliminary operations to Case Blue, which was launched on 28 June as the main German offensive on the Eastern Front in 1942.