The 2nd Composite Mounted Brigade[1] was a formation of the British Army in World War I.

Due to losses during the Battle of Scimitar Hill and wastage during August 1915, the 2nd Mounted Division had to be reorganised.

[3] The 1st Composite Mounted Brigade was formed at the same time with the 1st, 2nd and 5th Regiments.

[4] Each regiment had left a squadron headquarters and two troops (about 100 officers and men) in Egypt to look after the horses.

[5] The Nottinghamshire and Derbyshire and the London Mounted Brigades were reformed on 1 December[6] and the 2nd Composite Mounted Brigade passed out of existence.