3rd Light Horse Brigade The 3rd Light Horse Brigade was a mounted infantry brigade of the First Australian Imperial Force which served in the Middle Eastern theatre of World War I . The brigade first saw action during the Dardanelles Campaign in the Battle of Gallipoli where they were noted for their charge during the Battle of the Nek . After being withdrawn to Egypt in February 1916 they were involved in the Sinai and Palestine Campaign until the end of the war . They were attached to a number of different formations being part of the New Zealand and Australian Division in December 1914 , the ANZAC Mounted Division in March 1916 and the Australian Mounted Division in June 1917 who they remained with until the end of the war Formation . The 3rd 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 3rd Light Horse Brigade was part of the 3rd Contingent that was hastily put together at the beginning of October 1914 . The 3rd Light Horse Brigade was primarily raised from recruits serving in the various militia light horse formations created as a consequence of the Kitchener Report 1910 and the introduction of Universal Training . The Brigade . 8th Light Horse Regiment . This Regiment was recruited exclusively from Victoria . 9th Light Horse Regiment . This was a composite Regiment recruited from South Australia with two squadrons and Victoria which formed one squadron . 10th Light Horse Regiment . Originally recruited in Western Australia as " C " Squadron 7th Light Horse Regiment but extended to become a Regiment ( 10th Light House Regiment ) in its own right . It was recruited exclusively from Western Australia and the Militia 25th Australian Horse . 3rd Light Horse Machine Gun Squadron . Initially , each Regiment within the Brigade raised their own Machine Gun Section which consisted of two troops and two Maxim machine guns . This situation remained from 1914 until in July 1916 , when all Regimental Machine Gun Sections were excised and brigaded to form a Machine Gun Squadron . The 8th , 9th and 10th Machine Gun Sections were combined to form the 3rd Machine Gun Squadron under the command of the Brigade . The 3rd Light Horse Machine Gun Squadron was armed with 12 machine guns . 3rd Light Horse Signal Troop . The 3rd Signal Troop was created on 1 April 1916 by drafting in four signallers from each of the 12 Regiments at the Suez Canal . 3rd Light Horse Field Ambulance . Originally recruited at Melbourne in October 1914 to form part of the 2nd Light Horse Field Ambulance , when Military Order 575 of 1914 created the 3rd Light Horse Brigade and the unit became the 3rd Light Horse Field Ambulance . 3rd Light Horse Brigade Train . The 3rd Light Horse Brigade Train was primarily recruited around Melbourne and trained at Broadmeadows . After Gallipoli , this unit underwent some name changes from 3rd Supply Section in February 1916 to 35th Australian Army Service Corps Company in February 1917 . 8th Mobile Veterinary Section . Prior to 1916 , each Regiment maintained their own Veterinary Section , usually consisting of half a troop . After the formation of the ANZAC Mounted Division in 1916 , the three individual Regimental Veterinary sections were brigaded to form the 8th Mobile Veterinary Section . Artillery . Artillery support was provided for the 3rd Light Horse Brigade from British batteries . The first British battery attached to the Brigade was the British 4th ( Territorial Force ) Horse Artillery Brigade , Inverness Battery . This battery remained until the re - organisation of February 1917 when the Inverness Battery was replaced by the British 19th Horse Artillery Brigade , 1 / 1 Nottingham Battery . 3rd Light Horse Training Regiment . The 3rd Light Horse Training Regiment was formed in Egypt during March 1916 , tasked with training 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 Anzac 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 . 3rd Light Horse Double Squadron . Formed Egypt 6 July 1916 from 3rd Light Horse Brigade reinforcements . It was officered and administered by the 3rd Light Horse Brigade . This Double Squadron was broken up in November 1916 with the men being transferred to the newly formed Imperial Camel Corps Battalions . Embarkation . The Brigade embarked to Egypt during the months of February and March 1915 . In Egypt additional training occurred at the Mena Camp . Subsequent embarkations of reinforcements occurred as and when sufficient recruits were gathered and prepared for movement to a war theatre . See : Troop transport ships for information and photographs about the various ships employed in transporting the troops to Egypt . Disbandment . The Brigade was disbanded at Kantara , July 1919 when the various regiments within the Brigade embarked for Australia . As each Regiment arrived at its specific home port , it was disbanded .