Complex sentence: Eight aircraft from RAF West Raynham had been carrying out a 4x4 dogfight exercise at 45,000 ft, on completion of the exercise the eight Hunters diverted to RAF Marham but due to bad weather six of the aircraft were lost including one fatality.
Split into simpler sentences: Eight aircraft from RAF West Raynham had been carrying out a 4x4 dogfight exercise at. Upon completion of the exercise the eight Hunters diverted to RAF Marham but due to bad weather six of the aircraft were lost including one fatality.