The ensuing Second Battle of Kharkov ended in disaster for the Soviets , severely weakening their mobile forces .
The operation was scheduled for 12 May , just prior to a planned German offensive in the area .
The ensuing Second Battle of Kharkov ended in disaster for the Soviets , severely weakening German 's mobile forces .
The operation was scheduled for 12 May , just prior to a planned German offensive in the area .