After demobilisation in 1945 with the rank of Lieutenant Colonel he returned to Edinburgh and worked initially in the University Anatomy Department where he produced the thesis for which, in 1947, he was granted the degree of
Doctor of Medicine (MD). In that year, he was appointed assistant surgeon to
Leith Hospital and to the Royal Infirmary of Edinburgh. When the National Health Service was founded in 1948 he acquired the new designation of Consultant Surgeon and took charge of the Surgical Out-Patient Department. When Professor (later Sir)
Michael Woodruff was appointed to the Edinburgh Chair of Surgical Science in 1957, James Ross joined his surgical team in the Royal Infirmary as its senior member. In this capacity, he played an important part in the first successful British
kidney transplant which was successfully carried out by a team led by Professor Woodruff in 1960. In 1961 he was invited to set up a new general surgical unit at the
Eastern General Hospital, Edinburgh and the success of this unit was largely due to his energy and leadership. As Honorary Consultant Surgeon to the Army in Scotland from 1970-1976 and the surgical unit at the Eastern General was selected by the RAMC for the training of its surgical specialists. A succession of army surgeons were seconded for periods of one year under his tutelage. Ross always had a special interest in the surgical subspecialty of
urology. In 1960 Ross was elected a member of the
Harveian Society of Edinburgh and served as president in 1978. In 1971 he was elected a member of the
Aesculapian Club. == College activities ==