The 2nd South Western Mounted Brigade was a formation of the Territorial Force of the British Army, organised in 1908.

After service in the Gallipoli Campaign and in the defence of Egypt, it was absorbed into the 2nd Dismounted Brigade in February 1916.

[2] As the name suggests, the units were drawn from South West England, predominantly Devon and Somerset, but also a sub-unit from Cornwall.

[5] It was then dismounted, with the horses being taken over by its 2nd Line 2/2nd South Western Mounted Brigade which replaced it in the Home Defence role.

[10] In this period, the brigade consisted of the three yeomanry regiments, a signal troop and a field ambulance under the command of Br.-Gen. R. Hoare.