The Welsh Border Mounted Brigade was a formation of the Territorial Force of the British Army, organised in 1908.

After home defence service, it was posted to Egypt, where it was absorbed into the 4th Dismounted Brigade in March 1916.

[3] As the name suggests, the units were drawn from the areas adjacent to both sides of the England–Wales border, notably Denbighshire (Wales), Cheshire and Shropshire (both England).

[4] The brigade was mobilised on 4 August 1914 at the outbreak of the First World War and moved to East Anglia.

[8] The Welsh Border Mounted Brigade was commanded from 4 April 1912 by Colonel E.A.