Complex sentence: Despite the slow build up, due largley to the fact most of the Wehrmarcht's reinforcements were now directed to the Eastern Front to support Operation Barbarossa, by September 1941 the 5th Light Division was now at Panzer Division strength.
Split into simpler sentences: Despite the slow build up, due largley to the fact most of the Wehrmarcht's reinforcements were now directed to the Eastern Front to support Operation Barbarossa. By September 1941 the 5th Light Division was now at Panzer Division strength.