The 4th Mounted Division was a short-lived YeomanryDivision of the British Army active during World War I. It was formed on 20 March 1916, converted to 2nd Cyclist Division in July 1916 and broken up on 16 November 1916. It remained in England on Home Defence duties throughout its existence.[1]
The Headquarters remained at Colchester and the brigades at Wivenhoe, Kelvedon, Manningtree and West Malling. It was assigned to the Southern Army, Home Defence Troops,[5] and Lord Lovat remained in command.[6] The Headquarters moved to Ipswich in September 1916 and the brigade were now at Wivenhoe, Wingham, Woodbridge and Ipswich.[5]
A further reorganization in November 1916 saw the 2nd Cyclist Division broken up. The cyclist brigades were dispersed and the yeomanry regiments were amalgamated in pairs to form Yeomanry Cyclist Regiments in new cyclist brigades. The division had remained in England on Home Defence duties throughout its brief existence.[5]
^In accordance with the Territorial and Reserve Forces Act 1907 (7 Edw. 7, c.9) which brought the Territorial Force into being, the TF was intended to be a home defence force for service during wartime and members could not be compelled to serve outside the country. However, on the outbreak of war on 4 August 1914, many members volunteered for Imperial Service. Therefore, TF units were split into 1st Line (liable for overseas service) and 2nd Line (home service for those unable or unwilling to serve overseas) units.[2] 2nd Line units performed the home defence role, although in fact most of these were also posted abroad in due course.[3] Likewise, existing pre-war formations (brigades and divisions) formed duplicate 2nd Lines with the same structure as their 1st Line parents.[4]
Becke, Major A.F. (1936). Order of Battle of Divisions Part 2A. The Territorial Force Mounted Divisions and the 1st-Line Territorial Force Divisions (42-56). London: His Majesty's Stationery Office. ISBN1-871167-12-4.