In May 1942, the Soviets launched a new offensive effort aimed at retaking Kharkov in a pincer move.See Second Battle of Kharkov. The southern group attacked from the great bulge in the line west of Izsum, backed up by two of the newly created Tank Corps (23rd & 21st) and 6th Cavalry Corps and the northern grouping attacked on a more direct line using the 38th, 21st and 28th Armies backed up by 3rd Guards Cavalry Corps.Kharkov 1942, see map page 45
