Complex sentence: His military career saw the actions in the World War II and served in the North African Campaign where he took participation in Tobruk siege and was taken POWs by Afrika Korps, spending year-and-half in the Axis powers's camp before making his escape.
Split into simpler sentences: His military career saw the actions in the World War II and served in the North African Campaign. He took participation in Tobruk siege and was taken POWs by Afrika Korps, spending year-and-half in the Axis powers's camp before making his escape.