The 1st 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.

It left Mudros on 27 November, arrived Alexandria on 1 December and went to Mena Camp, Cairo.

[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 1st South Midland, 2nd South Midland and Yeomanry Mounted Brigades were reformed on 1 December and the 1st Composite Mounted Brigade passed out of existence.