Horan entered the Royal Navy in 1910 and served in
World War I taking part in the
Battle of Heligoland Bight in 1914. He was appointed Commanding Officer of the
cruiser HMS Coventry in 1931, Senior Naval Member on the Directing Staff at the
Imperial Defence College in October 1935 and Commanding Officer of the
battleship HMS Barham in 1937. He was made a
CB in the
New Year Honours 1947. ==References==