During World War II, he served as a Regimental Medical Officer and general duty officer with the Royal Malta Artillery, and later as trainee ophthalmic specialist stationed at the Military Hospital, Mtarfa. In the early days of the War, he narrowly escaped tragedy when a bomb fell at Fort Saint Elmo, demolishing a substantial part of the army barracks to which he had been posted. In 1946, he obtained a diploma in Ophthalmology from the University of Oxford, followed by a diploma in Ophthalmic Medicine and Surgery from the Royal College of Surgeons of England. He was a clinical assistant at Moorfields Eye Hospital in London.