Complex sentence: It arrived in Normandy on June 10th by truck after night drives from Brittany it was a full strength division made up of young German volunteers, it numbered 15,976 men and officers.
Split into simpler sentences: It arrived in Normandy on June 10th by truck after night drives from Brittany. It was a full strength division made up of young German volunteers, and numbered 15,976 men and officers.