11th Cavalry Brigade ( British Indian Army ) The London Mounted Brigade ( later numbered as the 8th Mounted Brigade ) was a yeomanry brigade of the British Army , formed as part of the Territorial Force in 1908 . It served dismounted in the Gallipoli Campaign before being remounted to serve in the Salonika and Sinai and Palestine Campaign s in World War I . In April 1918 , it was merged with elements of the 8th ( Lucknow ) Cavalry Brigade to form 11th Cavalry Brigade . It remained in Palestine after the end of the war on occupation duties . Formation . Under the terms of the Territorial and Reserve Forces Act 1907 ( 7 Edw . 7 , c . 9 ) , the brigade was formed in 1908 as part of the Territorial Force . It consisted of three yeomanry regiments , a horse artillery battery and ammunition column ( provided by the Honourable Artillery Company ) , a transport and supply column and a field ambulance . The 2nd County of London Yeomanry was attached for training in peacetime . As the name suggests , the units were drawn from London . World War I . London Mounted Brigade . The brigade was mobilised on 4 August 1914 at the outbreak of the First World War and concentrated in Berkshire . It joined 2nd Mounted Division on 2 September and moved with the division to East Anglia in November 1914 . Egypt . In April 1915 , the 2nd Mounted Division moved to Egypt arriving at Alexandria on 27 April ( City of London Yeomanry did not arrive until 6 May ) and was posted to the Suez Canal Defences ( near Ismaïlia ) by the middle of May . In May 1915 , the brigade was designated 4th ( London ) Mounted Brigade . It was dismounted in August 1915 and took part in the Gallipoli Campaign . Each regiment left a squadron headquarters and two troop s ( about 100 officers and men ) in Egypt to look after the horses . Gallipoli . The brigade landed at Suvla Bay on the morning of 18 August and moved into reserve positions at Karakol Dagh . It moved to " C " Beach , Lala Baba on 20 August . On 21 August it advanced to Chocolate Hill under heavy fire and took part in the attack on Hill 112 . Due to losses during the Battle of Scimitar Hill and wastage during August 1915 , the 2nd Mounted Division had to be reorganised . On 4 September 1915 , the 2nd Composite Mounted Brigade was formed from the 3rd ( Notts and Derby ) and 4th ( London ) Mounted Brigades . The brigade formed a battalion sized unit 4th London Regiment . The brigade embarked for Mudros on 2 November and returned to Egypt in December 1915 where it was reformed and remounted . 8th Mounted Brigade . The brigade left the 2nd Mounted Division on 18 January 1916 and was sent to Abbassia . It served as part of the Suez Canal Defences . On 31 March 1916 , the remaining Mounted Brigades were numbered in a single sequence . As a consequence , the London Mounted Brigade was redesignated as 8th Mounted Brigade . From November 1916 to June 1917 , the brigade took part in the Salonika Campaign , serving as GHQ Troops with the British Salonika Army . The brigade arrived back in Egypt from Salonika on 8 June 1917 . The Machine Gun Squadron was formed in Egypt on 14 June . The brigade moved forward and joined the newly formed Yeomanry Mounted Division on 21 July 1917 at el Fuqari . From 31 October it took part in the Third Battle of Gaza , including the Battle of Beersheba and the Capture of the Sheria Position . It took part in the Battle of Mughar Ridge on 13 and 14 November and the Battle of Nebi Samwil for 17 to 24 November . From 27 to 29 November , it withstood the Turkish counter - attacks during the Capture of Jerusalem . 11th Cavalry Brigade . In March 1918 , the 1st Indian Cavalry Division was broken up in France . The British units ( notably 6th Dragoons , 17th Lancers , 1 / 1st Queen ' s Own Yorkshire Dragoons and A , Q and U Batteries RHA ) remained in France and the Indian elements were sent to Egypt . By an Egyptian Expeditionary Force GHQ Order of 12 April 1918 , the mounted troops of the EEF were reorganised when the Indian Army units arrived in theatre . On 24 April 1918 , the Yeomanry Mounted Division was " indianized " and its title was changed to 1st Mounted Division , the third distinct division to bear this title . On 24 April 1918 , the 8th Mounted Brigade was merged with elements of the 8th ( Lucknow ) Cavalry Brigade : On 22 July 1918 , the 1st Mounted Division was renumbered as the 4th Cavalry Division and the brigade as 11th Cavalry Brigade . The sub units ( Signal Troop , Combined Cavalry Field Ambulance and Mobile Veterinary Section ) were renumbered on the same date . The brigade remained with 4th Cavalry Division for the rest of the war , taking part in the Battle of Megiddo and the Capture of Damascus . Commanders . The London Mounted Brigade / 8th Mounted Brigade / 11th Cavalry Brigade had the following commanders :