Returning to the Scotland he became an assistant surgeon at Leith Hospital then in 1939 took up a position at Edinburgh Royal Infirmary.
At the outbreak of the Second World War he joined the Royal Army Medical Corps.
A hand injury prevented him from operating and he was posted to the Chasseurs Alpins (Les Diables Bleu) as their Medical Officer.
[2] In 1956 Cameron was elected a member of the Harveian Society of Edinburgh and served as President in 1969.
[4] She was an artist and her portrait of James is held in the Royal College of Surgeons of Edinburgh.