Complex sentence: Fighting in the aerial battles of Stalingrad, the Caucasus, at the Black Sea, and over the Crimea, he was credited with 84 aerial victories before briefly being transferred to the Western Front, where he was credited with one aerial victory.
Split into simpler sentences: Fighting in the aerial battles over Stalingrad, the Caucasus, on the Black Sea, and over the Crimea. He was credited with 84 aerial victories before briefly being transferred to the Western Front, where he was credited with one aerial victory.