Complex sentence: After graduating, he joined the Nazi Party and entered World War II as a soldier in the Panzer Brigade 150 taking part in Blitzkriegs in Belgium and France, before becoming a Skorzeny Werwolf commando.
Split into simpler sentences: After graduating, he joined the Nazi Party and entered the "Wehrmacht" as a soldier in the Panzer Brigade 150. At the outset of the Second World War he took part in the Blitzkrieg campaigns in Belgium and France, before becoming a Skorzeny Werwolf commando.