Complex sentence: He then went onto command the III. Battalion, 2nd SS Panzer Regiment between July and October 1943, this unit had been formed from captured T-34 tanks and crewed by the 2nd SS Panzerjager Battalion.
Split into simpler sentences: He then went onto command the III. Battalion, 2nd SS Panzer Regiment between July and October 1943. This unit had been formed with captured T-34 tanks crewed by the 2nd SS Panzerjager Battalion.