The 4th Cavalry Brigade was a cavalry brigade of the British Army. It served in the Napoleonic Wars, in the First World War on the Western Front where it was initially assigned to The Cavalry Division before spending most of the war with the 2nd Cavalry Division, and with the 1st Cavalry Division during the Second World War.

The 2nd Cavalry Division was a division of the regular British Army that saw service in the Peninsular War and in World War I, when it also known as Gough's Command, after its commanding general. It was part of the British Expeditionary Force that served in France in from 1914 to 1918. It was involved in most of the major actions where cavalry were used as a mounted mobile force, and also many where the troops were dismounted and effectively served as infantry.