Inter-War

1920 Re-establishment of Territorial Army

New recruiting started in early 1920, and the Territorial Force was reconstituted 7 February 1920. On 1 October 1920 the Territorial Force was renamed the Territorial Army. The 1st Line divisions (that were created in 1907 or 1908) were reconstituted in that year. However, the composition of the divisions was altered with a reduction in the number of infantry battalions required. There was also a reduced need for cavalry, and of the fifty-five yeomanry regiments, only the fourteen senior regiments retained their horses. The remaining yeomanry were converted to artillery or armoured car units or disbanded. The amalgamation of forty pairs of infantry battalions was announced in October, 1921.

As part of the post-war "Geddes Axe" financial cuts the TA was further reduced in size in 1922: artillery batteries lost two of their six guns, the established size of infantry battalions was cut and ancillary medical, veterinary, signals and Royal Army Service Corps units were either reduced in size or abolished. An innovation in 1922 was the creation of two Air Defence Brigades to provide anti-aircraft defence for London.