6th Brigade (Australia)

The 6th Brigade was an infantry brigade of the Australian Army. It was originally raised as part of the all-volunteer Australian Imperial Force (AIF) during World War I. Formed in Melbourne, Victoria, in September 1914, it comprised four infantry battalions: the 21st, 22nd, 23rd, and 24th Battalions. The brigade was assigned to the 2nd Division and served throughout the Gallipoli Campaign and on the Western Front. It participated in many significant battles including those at Lone Pine, Pozières, Mouquet Farm, Bullecourt, the Menin Road, Polygon Wood, and the Battle of Broodseinde.

Following the end of World War I, the 6th Brigade was re-raised as part of the Citizens Military Force (CMF), Australia's part-time army. During World War II, the brigade was mobilized in 1939, initially performing garrison duties in Australia. In 1942, the brigade was sent to New Guinea as part of the 17th Brigade Group, participating in the Kokoda Track campaign. Later, it served in the Battle of Buna–Gona.

After World War II, the 6th Brigade was again re-established within the CMF. In the late 20th century, it was restructured under the Ready Reserve scheme and its constituent units were reorganized and integrated into other formations within the Australian Army. Today, the designation '6th Brigade' no longer exists as a standing brigade within the Australian Army's order of battle.