The Scottish Horse Mounted Brigade was a formation of the Territorial Force of the British Army, raised in August 1914,[a] during the First World War.

After service in the Gallipoli Campaign and in the defence of Egypt, it was absorbed into the 1st Dismounted Brigade in February 1916.

In peacetime they were organised as:[4] The 3rd Scottish Horse was formed in August 1914 at the outbreak of World War I.

[5] The Scottish Horse Field Ambulance developed an operating car, designed by Colonel H. Wade in 1914, which enclosed an operating table, sterilisers, full kit of instruments and surgical equipment, wire netting, rope, axes and electric lighting in a Wolseley chassis.

[9] On 17 August 1915, the brigade boarded SS Transylvania at Devonport and sailed to Gallipoli where it landed at Suvla on 2 September.