Sanger was born at Reading and was educated at Cheltenham College.[1] From there he attended the Royal Military Academy, Woolwich, graduating in June 1918 as a second lieutenant in the Royal Field Artillery and serving in the latter stages of the First World War.[2] He made a single appearance in first-class cricket for the British Army cricket team against the Royal Navy at Lord's in July 1925.[3] Batting once in the match, he scored 2 runs in the Army's only innings, before being dismissed by Dallas Brooks.[4] Playing as a wicket-keeper, he also took two catches and made a single stumping.[4]
He was seconded for service with the Colonial Office in September 1925, by which point he held the rank of lieutenant.[5] He was granted the temporary rank of captain in March 1929, while serving with the Royal West African Frontier Force.[6] He was restored to the Royal Artillery in November 1929,[7] after ceasing to be employed in the Royal West African Frontier Force.[8] By 1931, Sanger was serving in the British Indian Army as a captain.[9] He was promoted to the rank of major in September 1938.[10][11] He served during the Second World War with the British Indian Army as part of the Prince Albert Victor's Own Cavalry.[12] Following the conclusion of the war, Sanger was promoted to the rank of lieutenant colonel in December 1945, with seniority antedated to June 1944.[13]
While serving in India he was a noted 8-goal handicap polo player.[12] Sanger took part in the Inter-regimental Tournament, the Western India Championship, the Radha Mohan Tournament, and the Queen's Bay Challenge Cup.[12] In England he was a previous Hurlingham Club champion and winner of the Hargreaves (Warwickshire) Cup.[12] He retired from active service with the British Indian Army in April 1947, retaining the rank of lieutenant colonel.[14] In retirement he was appointed to the British Army's Regular Army Reserve of Officers as a lieutenant colonel in the Royal Armoured Corps in January 1949.[15] Having exceeded the age for recall, he was removed from the reserve of officers list in October 1954.[16] He died in September 1968 at Avebury, Wiltshire.