Career
Harrison was commissioned into the Royal Artillery in 1900 and served in World War I. He was appointed Commander Royal Artillery for the 55th Division in 1930, Commandant of the Royal School of Artillery at Larkhill in 1932 and Major-General Royal Artillery in India in 1935. He went on to be General Officer Commanding 2nd Anti-Aircraft Division in 1936. In 1939 he became Lieutenant Governor of Jersey but held the role only until June 1940 when the Island came under German Occupation.
He retired in 1941.