Complex sentence: Von Werra then returned to the Luftwaffe and was initially deployed to the Russian front as "Gruppenkommandeur" of I./JG 53, raising his tally by 13, to 21 aerial victories during July 1941.
Split into simpler sentences: Von Werra then returned to the Luftwaffe and was initially deployed to the Russian front as "Gruppenkommandeur" of I./JG 53. He raised his tally by 13, to 21 aerial victories during July 1941.