Complex sentence: He served with 48th Panzer Corps from November 1942 to May 1944, participating in the battles following the encirclement of Stalingrad, and was in frequent radio contact with Paulus, the commanding general at Stalingrad.
Split into simpler sentences: He served with 48th Panzer Corps from November 1942 to May 1944. He participated in the battles following the encirclement of Stalingrad, and was in frequent radio contact with Paulus, the commander at Stalingrad.