In 1910, Gossage was commissioned into the Royal Field Artillery while still a first-year student, a considerable accolade. He was commissioned as an officer of the Special Reserve to ensure he would not be mobilised into service until he had completed his studies and his commission was confirmed in 1911. On graduating in 1912, he was transferred from the Reserve into regular service and began his professional career.
When the First World War broke out in 1914 Gossage was still a young second lieutenant in the Royal Field Artillery, where he remained for the first year of the war. However, on 12 May 1915, he was seconded to the Royal Flying Corps where he was assigned to No. 6 Squadron as a pilot. By 5 September 1915 he had reached the rank of captain and had become a Flight Commander in No. 6 Squadron. He was awarded the Military Cross in March the following year for his "consistent good and zealous work under bad weather conditions, both on patrol and when co-operating with the artillery in operations resulting in the capture of the enemy's position". Following a promotion to major in 1916, Gossage was given command of No. 56 Squadron, later taking command of No. 8 Squadron in the same year. In 1917 Gossage was promoted to lieutenant colonel and took command of the Royal Flying Corps' 1st Wing. On 1 April 1918, the Royal Air Force was founded and Gossage was transferred to the new Service. He was appointed as a Staff officer in the Directorate of Operations and Intelligence. In 1919, he was awarded the Distinguished Service Order for his period in command. In addition, he was mentioned in despatches for gallantry four times during the war.
Royal Air Force
Inter-War
At the end of the war, Gossage was given a permanent commission in the Royal Air Force. He became Officer Commanding of the School of Army Co-operation before moving on to be Deputy Director of Staff Duties, in the rank of Group Captain, at the Air Ministry in 1928. He was then appointed Air Attaché in Berlin in 1930, Senior Air Staff Officer at Headquarters Air Defence of Great Britain and, in 1934, Senior Air Staff Officer at Headquarters RAF Iraq Command. Gossage was promoted Air Commodore in 1932. In 1935 he was briefly appointed Air Officer CommandingBritish Forces Aden, before returning home to become Air Officer Commanding No. 11 Group in the new Fighter Command, in 1936. On 1 January 1936, Gossage had been promoted to the rank of Air Vice-Marshal and in 1937, AVM Gossage received the CB.
Following his retirement from regular service with the Royal Air Force, Gossage agreed to be re-employed to assume the role of Commandant Air Cadets, following the retirement of Air Commodore John Adrian Chamier; he also agreed to serve temporarily as an Air Vice-Marshal for the duration. He served in this role until he stepped down in 1946.
Family
Air Marshal Sir Leslie Gossage retired to Buxted in Sussex, but died only a few years later, in 1949. He was 58. Ernest Leslie Gossage was married with two sons. Capt. Gossage married Eileen O'Brien in 1917. Eileen was from a very military and very distinguished family: the daughter of Brigadier-General Edmund O'Brien, late 14th Hussars Their elder son, Terence Leslie Gossage was born in 1918. Terence joined the King's Own Yorkshire light Infantry and retired as a Major, with an MBE. He died in 1999, survived by his own three children, one of whom followed in the footsteps of his grandfather, in military aviation. The younger son, Peter Leslie Gossage, was born in 1919. Peter joined the Royal Air Force Volunteer Reserve and became a pilot, like his father. He was commissioned as a Pilot Officer and flew Hurricanes with 85 Sqn. Initially based in France as part of the Air Component of the BEF, the squadron was withdrawn during the Battle of France and then operated from Debden. Pilot Officer Peter Gossage was killed on 31 May 1940 and is buried near his family, in Buxted.
