General Sir John Monash, was an Australian civil engineer and military commander of the First World War. He commanded the 13th Infantry Brigade before the war and then, shortly after its outbreak, became commander of the 4th Brigade in Egypt, with whom he took part in the Gallipoli campaign. In July 1916 he took charge of the newly raised 3rd Division in northwestern France and in May 1918 became commander of the Australian Corps, at the time the largest corps on the Western Front. According to A. J. P. Taylor he was "the only general of creative originality produced by the First World War".

The 4th Brigade is a brigade-level formation of the Australian Army. Originally formed in 1912 as a Militia formation, the brigade was re-raised for service during World War I, elements of the brigade served at Gallipoli and in the trenches on the Western Front before being disbanded in 1919. In 1921, the brigade was re-raised as a unit of Australia's part-time military forces, based in the state of Victoria. During World War II the brigade served in the New Guinea and New Britain campaigns. Following the war, the brigade formed part of the 3rd Division, however, it was later reallocated to the 2nd Division, where it serves as a Reserve combined-arms formation including units and personnel from all corps of the Army including armoured, infantry, artillery, engineers, signals and ordnance.