The regiment draws its lineage from the 4th Artillery Brigade that was formed on 1 July 1903 at Victoria Barracks in Sydney. During the First World War, a large number of the unit's personnel volunteered with the all volunteer Australian Imperial Force and in 1914 a large cadre of trained personnel were provided to the 1st Field Artillery Brigade, which was assigned to the 1st Division. This unit went on to serve at Gallipoli and on the Western Front. The 9th Field Artillery Brigade, consisting of the 33rd, 34th and 35th Field Batteries, and the 118th Field Howitzer Battery, was also raised in 1916 for service on the Western Front, as part of the 3rd Division. The current regiment claims lineage with this unit. The 3rd Division undertook training in the United Kingdom in mid- to late-1916, before deploying to the Western Front in December 1916; as a result, it missed the fighting on the Somme. Shortly after the division's arrival, the 9th Field Artillery Brigade was disbanded in mid-January 1917 when the decision was made to consolidate the number of guns within each battery and reduce the number of artillery brigades in each division.