sentences:  Educated at Haverfordwest Grammar School in Wales and at the Britannia Royal Naval College where he became a cadet-in-lay in 1898; he joined HMS Repulse on passing out, and in 1900 as a midshipman of HMS Barfleur took part in the Seymour Expedition to China, for which he received the China War Medal with Peking clasp.In 1901, he was promoted to lieutenant rank, two years later he obtained four "first lieutenant" appointments.That same year in 1903, he volunteered to join the Royal Navy Submarine Service, and was one of the first officers to command a submarine.