sentences:  Steinbatz claimed 7 victories on 8 May to take his own score to 58.But a large Soviet counter-attack in May, south of Kharkov, forced III./JG 52 to be urgently dispatched to that sector.The "Gruppe" claimed 89 victories in just its first two days over Kharkov, with Graf becoming the first pilot in JG 52 to reach the century (on 14 May).