Complex sentence: H-hour was the name given to the airborne assault during the Normandy landings of World War II. The units involved included the U.S.101st Airborne Division and U.S.82nd Airborne Division, along with the British 6th Airborne Division.
Split into simpler sentences: H-hour was the name given to the airborne assault in the Battle of Normandy. It included the American 101st Airborne Division and 82nd Airborne Division With the British 6th Airborne Division.