sentences:  Bensusan-Butt later joined the Royal Navy, serving on the minelayer HMS "Cyclone".Following the war, Butt moved to the Economic Section of the Cabinet Office and later the Treasury.In 1949–1950 he was seconded to the Australian Prime Minister's Department, and he spent two periods of one year at Nuffield College, Oxford as a research fellow, in 1953–1954 and 1958–1959.