Awarded to Admiral Sir Louis Henry Keppel Hamilton (1890-1957). Neck badge: Gold rimmed, white enamel, eight pointed cross; each point tipped with a gold ball. Within each angle between the arms of the cross, a gold lion. Centre medallion consists of three gold crowns separated by a rose, thistle and shamrock issuing from a sceptre. On a red enamel circle the motto: 'TRIA JUNCTA IN UNO'. On a blue enamel scroll: 'ICH DEIN'. Suspended by a loop and ring embossed with acorns and oak leaves through which passes a crimson neck ribbon which is fastened by a gilt clasp. Hallmarked on suspension loop. Star: in the shape of a silver cross patee, centre medallion the same as the badge.

Hamilton (known throughout his career as 'Turtle'), son of Admiral Sir Frederick Tower Hamilton, entered the Navy in 1903. After Dartmouth he served on the Mediterranean Station, 1908 to 1910, in the Albemarle and the Prince of Wales. Between 1910 and 1911 he was in the Vanguard in the Channel and went in the Venus to the Indian Durbar of 1911. He was made lieutenant in 1913, after which he went to the Cumberland and took a prominent part in the Cameroons operations, 1914 to 1915. Subsequently he began a long service commanding destroyers in the Harwich Force. Between 1915 and 1916 he was in the Moorsom and in the Taurus from 1917 to 1918. He was appointed to the Strenuous, home waters, in 1921, to the Queen Elizabeth, home waters, 1922 to 1924 and in 1925 to the Royal Yacht, Victoria and Albert, becoming a commander in 1926. He next served in the destroyers Wanderer and Wild Swan, Mediterranean and China, 1927 to 1928, returned to the Mediterranean for a short period in 1929 and was at the Admiralty from 1931 to 1932. He was promoted to captain in 1932, commanded the Norfolk, flagship on the East Indies Station, 1935 to 1937, and was Captain of the Royal Naval College, Greenwich, 1938 to 1939. Promoted to rear-admiral in 1941, he commanded the First Cruiser Squadron, Home Fleet, from 1940 to 1942, during which he was ordered to abandon the Arctic convoy PQ17. He was Flag Officer, Malta, 1943 to 1945, and then went to Australia as First Member of the Commonwealth Naval Board, 1945 to 1948. He was made an admiral in 1947 and retired in 1948.