Complex sentence: During World War II with forming of the first British Airborne units parachute training was a 12 day course carried out at the No.1 Parachute Training School, RAF Ringway.
Split into simpler sentences: During World War II with forming of the first British Airborne units. Parachute training was a 12 day course carried out at the No.1 Parachute Training School, RAF Ringway.