Admiral of the Fleet Alfred Ernle Montacute Chatfield, 1st Baron Chatfield, (27 September 1873 – 15 November 1967) was a Royal Navy officer. During the First World War he was present as Sir David Beatty's Flag-Captain at the Battle of Heligoland Bight in August 1914, at the Battle of Dogger Bank in January 1915 and at the Battle of Jutland in May 1916. After the war he became Commander-in-Chief, Atlantic Fleet and then Commander-in-Chief, Mediterranean Fleet before serving as First Sea Lord in the mid-1930s in which role he won arguments that the Royal Navy should have 70 cruisers rather than the 50 cruisers that had been agreed at the Naval Conference of 1930, that the battleship still had an important role to play despite the development of the bomber and that the Fleet Air Arm should be part of the Royal Navy rather than the Royal Air Force. He subsequently served as Minister for Coordination of Defence in the early years of the Second World War. Naval career Early naval career Born the only son of Admiral Alfred John Chatfield and Louisa Chatfield (née Faulconer), Chatfield was educated at St Andrew's School in Tenby before he entered the Royal Navy as a cadet in the training ship HMS Britannia in 1886. He went to sea as a midshipman in the corvette HMS Cleopatra in November 1888 before transferring to the cruiser HMS Warspite, flagship of the Pacific Station, in 1890. Promoted to sub-lieutenant on 27 September 1892 and to lieutenant on 27 March 1894, he joined the battleship HMS Royal Sovereign, flagship of the Channel Fleet in May 1894. He attended the gunnery school HMS Excellent in 1895 and then joined the staff at the gunnery school HMS Cambridge at Devonport in August 1897. Chatfield became gunnery officer in the battleship HMS Caesar in the Mediterranean Fleet in January 1899 and then joined the staff of the gunnery school HMS Wildfire at Sheerness in January 1900 before becoming 1st lieutenant and gunnery officer in the cruiser HMS Good Hope in the Atlantic Fleet in November 1902. Promoted to commander on 1 January 1904, he transferred to the battleship HMS Venerable in the Mediterranean Fleet in January 1904. He returned to HMS Excellent in March 1906 and, having been promoted to captain on 30 June 1909, he became Flag Captain of the battleship HMS Albemarle, flagship of Rear-Admiral Sir Colin