Complex sentence: Lainer was now promoted to Hauptscharführer (Senior Sergeant) in January 1944 and moved with the "Das Reich" Division to France, where he would lead his men against the British and American forces in Normandy.
Split into simpler sentences: Lainer was now promoted to Hauptscharführer in January 1944 and moved with the "Das Reich" Division to France. Where he would lead his men against the British and American forces in Normandy.