Complex sentence: Although JG 52 were not directly involved in the final stages of the Battle of Stalingrad, II./JG 52 supported the attempted break-through by 4th Panzer Army in late 1942.
Split into simpler sentences: Although JG 52 were not directly involved in the final stages of the Battle of Stalingrad. II/JG 52 supported the attempted break-through by 4th Panzer Army in late 1942.