Raymond Cheung served as a correspondent for a number of well-known defence journals in the United Kingdom, writing mainly on naval matters. However, his ‘first love’ is research in the history of the Chinese air Force during the Sino-Japanese War 1937-45. In pursuit of this research, he has visited the archives of the Republic of China Air Force (RoCAF) and the Japanese Defence Department on numerous occasions. Some of this research has been published in Chinese publications. This will be his first work on the subject in English.