List of Provisional Battalions of the Territorial Force

When the Territorial Force (TF) was created in 1908 it was a part-time volunteer force intended for home defence when the Regular British Expeditionary Force (BEF) was deployed overseas, although a small number of TF units had volunteered for 'Imperial Service'. With the outbreak of World War I the TF was mobilised on 4 August 1914 and went to its war stations. However, on 10 August the TF was invited to volunteer for overseas service, and the majority of men and units did so. Those who did not volunteer or were unfit for overseas service were separated on 15 August to form the basis for reserve units to train the mass of volunteer recruits coming forward. From 31 August these reserve units were termed '2nd Line', distinguished from their 1st Line parents by a '2/' prefix. In this way duplicate units and formations came into being.

Provisional units
By May 1915 it was decided to prepare the 2nd Line TF units for overseas service, and 3rd Line training units were created to supply reinforcements to the 1st and 2nd Lines. At the same time the remaining home service and unfit personnel were separated and grouped into coast defence brigades, shortly afterwards termed provisional brigades. The provisional infantry battalions were numbered up to 108 (with some gaps in the sequence). Support units (Royal Field Artillery, Royal Engineers, Army Service Corps etc), took the number of the provisional brigade to which they belonged.

The Military Service Act 1916 swept away the home/foreign service distinction, and all TF soldiers became liable for overseas service, if medically fit. The provisional brigades thus became anomalous, and on 1 January 1917 the remaining infantry units became numbered battalions of appropriate regiments.

External Sources

 * Chris Baker, The Long, Long Trail
 * Great War Forum