Horton was born on 29 December 1919 in Masterton, New Zealand, the only child of Constance Welch and Thomas Hector 'Bill' Horton. He grew up in Masterton and attended Wairarapa High School. Horton learned to fly in a de Havilland Gipsy Mothbiplane at the Wairarapa & Ruahine Aero Club where he was selected in July 1937 for training as part of the civil reserve of pilots. He worked in a law office before joining the Royal New Zealand Air Force on 26 October 1939.
Air Force career
No. 88 Squadron
Horton received additional flight training at Blenheim, New Zealand, in the Vickers Vildebeest, and then headed to England at the end of April 1940 aboard the SS Mataroa. At RAF Benson, he trained in the Fairey Battle and was assigned to No. 88 Squadron RAF where he flew anti-ship patrols from RAF Sydenham in Northern Ireland. The squadron moved to RAF Swanton Morley in July 1941 where Horton transitioned to the Bristol Blenheim and flew more anti-ship patrols. In 1942, Flight Lieutenant Horton was awarded the Distinguished Flying Cross for his skill and bravery on anti-ship missions including the hazardous low-level attack on shipping at Rotterdam on 28 August 1941. On at least three missions, he successfully returned to base after one of his aircraft's engines had been disabled by anti-aircraft fire. Horton transitioned to the Douglas Boston and flew more anti-ship strikes from RAF Attlebridge northwest of Norwich, Norfolk, England. He participated in a number of Circus missions in which RAF bombers, escorted by friendly fighters, were used to draw out Luftwaffe fighters to their destruction. After completing his first combat tour, Horton spent a year as an instructor teaching instrument flying.
Pathfinder Force
In July 1943, Horton was assigned to No. 105 Squadron RAF where he flew the de Havilland Mosquito light bomber from RAF Marham in Norfolk as part of the Pathfinder Force. The Pathfinders specialized in locating and marking targets with flares thereby improving the accuracy of the following main bomber force. No. 105 Squadron was part of the No. 8 Group. For Horton, this meant a change from low-level daylight to high altitude nighttime missions. The squadron utilized precision navigation aids such as the "Oboe" system that allowed the Pathfinders to accurately mark targets despite the industrial haze and cloud cover that obscured the area by night. Horton also dropped bombs, including the "cookie", from his Mosquito. He participated in the Battle of the Ruhr in 1943 and protected the Normandy landings in 1944. In 1944, Squadron Leader Horton was awarded a Bar to his Distinguished Flying Cross for demonstrating "great courage and determination" on his missions with No. 105 Squadron. In June of the following year, he took command of the squadron. On 21 September 1945, Wing Commander Horton received the Distinguished Service Order. The citation recognized his "sound judgement and fine leadership as a flight commander". FlightGlobal included Horton in their 1945 photo presentation of Pathfinder leaders. Horton completed his World War II service with 111 sorties, 84 of them with the Pathfinders, and returned to New Zealand in 1946. He separated from the RNZAF on 10 April 1947.
RAF career
The United Kingdom's Air Ministry offered Horton an appointment to a permanent commission with seniority for his wartime service if he would accept a position with the Royal Air Force. Horton left New Zealand and returned to England in late 1947 where he began his RAF service on 1 January 1948. After several staff appointments, including the Air Ministry in London and RAF Coastal Command headquarters, Horton took command of No. 203 squadron RAF from December 1952 to January 1955. The squadron relocated in late 1952 to RAF Topcliffe and re-equipped with the Neptune MR.1 to perform North Atlantic Ocean maritime and anti-submarine patrols during the Cold War with the Eastern Bloc. In 1955, Horton returned to the Air Ministry and served with the department of the Chief of the Air Staff. Horton was promoted to RAF wing commander in 1956 and in 1964 was assigned to the staff of the North Atlantic Treaty Organization Military Committee at the Pentagon in the United States. From 1959 to 1960, Horton served in a dual capacity as senior air staff officer at RAF Gibraltar and British air attaché to Rabat, Morocco. Horton retired from the RAF with the rank of wing commander on 29 December 1966 with a total of 27 years of military service.
Horton married in December 1943 and has one daughter, Gail, and one son, Peter. His wife of 68 years, Beris, died in October 2011. Horton remains interested in aviation and attends luncheons with fellow pilots. During a 2012 interview, he expressed a desire to visit a restored de Havilland Mosquito at the nearby Military Aviation Museum, but age has made travel increasingly difficult for him., Horton resides with his daughter in Naples, Florida in the United States.