The regiment was originally formed as A Company, Heavy Section, Machine Gun Corps in May 1916 during the First World War (1914–1918). It took part in the first ever tank offensive in 1916 and saw action on the Western Front again in the Battle of Cambrai in November 1917 and later in the Hundred Days Offensive. Remaining active in the army during the interwar period, in 1939 it was renamed the 1st Royal Tank Regiment.
After a period based in Germany, 1 RTR fought Communist forces during the Korean War.
The regiment was in the Suez Canal Zone as part of 25 Armoured Brigade to protect British interests in the Zone from in January 1954 to August 1955.[2]
In 1957 the regiment was posted to Hong Kong as part of the 48th Gurkha Infantry Brigade. When it left Hong Kong in 1960 it replaced the Comet tanks with Centurions at Hohne, West Germany.[2]
Amalgamation
In 1993, it amalgamated with the 4th Royal Tank Regiment without change of title.[1] It incorporated both of the original regiments' traditional recruiting areas of Merseyside and Scotland.[3]