4th Light Horse Brigade The 4th Light Horse Brigade was a mounted infantry brigade of the First Australian Imperial Force serving in the Middle Eastern theatre of World War I . The brigade was formed in March 1915 and shipped to Egypt without their horses and was broken up in Egypt in August 1915 . Reformed in February 1917 , the Brigade was attached to the Imperial Mounted Division of the Egyptian Expeditionary Force and in June 1917 transferred to the Australian Mounted Division , where it served in the Sinai and Palestine Campaign until the end of the war . History . Formation . The 4th Light Horse Brigade was raised in response to a promise made by the Australian Government to supply a division of 20 , 000 Australians comprising infantry , artillery and cavalry to be used at the discretion of Britain . The 4th Light Horse Brigade was part of the 4th Contingent that was raised from 4 March 1915 . The 4th Light Horse Brigade was primarily raised from recruits currently serving in the various militia light horse formations created as a consequence of the Kitchener Report 1910 and the introduction of Universal Training . Embarkation . The original Brigade embarked to Egypt during months of May and June 1915 . In Egypt additional training occurred at the Heliopolis Camp . Subsequent embarkations of reinforcements occurred as and when sufficient recruits were gathered and prepared for movement to a war theatre . Reformation . After returning to Egypt from the Gallipoli Campaign the 4th 11th and 12th Light Horse Regiments remained unbrigaded until the War Office agreed to reform the 4th Light Horse Brigade in January 1917 . The brigade would join the 3rd Light Horse Brigade and the 5th and 6th Mounted Brigades to form the Imperial Mounted Division ( later known as the Australian Mounted Division ) . Battle of Beersheba . The most notable action the 4th Light Horse Brigade participated in was the cavalry charge during the Battle of Beersheba in 1917 . Disbandment . The Brigade was disbanded in July 1919 when the individual regiments returned to Australia from June to July 1919 . As each Regiment arrived in the specific home port , they were disbanded . Composition . 4th Light Horse Regiment . This Regiment was recruited exclusively Victoria in August 1914 as Divisional Cavalry . " B " and " D " Squadrons embarked for France in May 1916 . A new " B " Squadron was raised as a consequence . The Regiment was renamed 3rd Camel Regiment in September 1916 and served with the Imperial Camel Corps until it brigaded with the 11th and 12th Light Horse Regiments into the 4th Light Horse Brigade in February 1917 . 11th Light Horse Regiment . This was a composite Regiment recruited primarily from Queensland with a South Australian Squadron . " A " Squadron and " B " Squadron recruited from Queensland and " C " Squadron recruited from South Australia . The Regiment was broken up on 26 August 1915 as reinforcements to Regiments at Gallipoli . " A " Squadron became " D " Squadron , 2nd Light Horse Regiment , " B " Squadron became " D " Squadron , 5th Light Horse Regiment and " C " Squadron became " D " Squadron , 9th Light Horse Regiment . The Regiment was reconstituted on 20 February 1916 at Heliopolis , Egypt . The Regiment was renamed 1st Camel Regiment in September 1916 and served with the Imperial Camel Corps until it brigaded with the 4th Light Horse Brigade in February 1917 . 12th Light Horse Regiment . The 12th Light Horse Regiment was recruited exclusively from New South Wales . The Regiment was broken up on 26 August 1915 as reinforcements to Regiments at Gallipoli . " A " Squadron became " D " Squadron , 1st Light Horse Regiment , " B " Squadron became " D " Squadron , 7th Light Horse Regiment and " C " Squadron became " D " Squadron , 6th Light Horse Regiment . The Regiment was reconstituted on 20 February 1916 in Egypt . It was renamed 2nd Camel Regiment in September 1916 and served with the Imperial Camel Corps until it brigaded with the 4th Light Horse Brigade in February 1917 . 4th Light Horse Machine Gun Squadron . The 4th Light Horse Machine Gun Squadron was formed when the Parent Brigade was formed in February 1917 . The 4th Light Horse Machine Gun Squadron was armed with 12 machine - guns . 4th Light Horse Signal Troop . The 4th Signal Troop was created in February 1917 by drafting in four signallers from each of the 12 Regiments in Palestine . 4th Light Horse Field Ambulance . The 4th Light Horse Field Ambulance was formed in February 1917 from some 60 men drawn out of all the other Light Horse formations in Egypt . 4th Light Horse Brigade Train . The 4th Light Horse Brigade Train was primarily recruited around Melbourne and trained at Broadmeadows . After Gallipoli , this unit underwent some name changes from 4th Supply Section in February 1917 to 36th Australian Army Service Corps Company in August 1917 . 9th Mobile Veterinary Section . The 9th Mobile Veterinary Section was formed in February 1917 . Artillery . Artillery support was provided for the 4th Light Horse Brigade from the British 19th Horse Artillery Brigade , " A " Battery , Honourable Artillery Company and 1 / 1st Notts RHA . 4th Light Horse Training Regiment . Formed in Egypt during February 1917 , this unit trained incoming reinforcements while allowing the wounded and sick a place to recover before returning to active service . The Training Regiment contained three squadrons , each duplicating the Regiments within the Brigade to whom it supplied the reinforcements . The Training Regiment was disbanded in July 1918 to be replaced by the Australian Light Horse Training Regiment when recruits were no longer tied to a Regiment but placed in a general pool of reinforcements called the General Service Reinforcements . Campaigns . Palestine :