Complex sentence: It is now largely accepted that World War II squadrons of the Royal Air Force manned by pilots of New Zealanders are recorded by the formulation 488 (NZ) squadron RAF, however some authors (e.g. Bill Gunston), have used the formulation 488 squadron RNZAF.
Split into simpler sentences: It is now largely accepted that World War II squadrons of the Royal Air Force manned by New Zealanders are recorded by the formulation 488 (NZ) Squadron RAF. However some authors (e.g. Bill Gunston), have used the formulation 488 squadron RNZAF.