Gippsland Fires, as well as support to the community during the 2009 Victorian bushfires and the 2011 floods and 2012 floods. The brigade also supported relief efforts during the 2019–20 Australian bushfire season. Under Plan Beersheba the 4th Brigade is paired with the reserve 9th Brigade to reinforce the regular 1st Brigade. In the event of the 1st Brigade being deployed, the two reserve brigades are tasked with generating a battalion-sized battle group, designated "Battlegroup Jacka". Current structure and recent operations Currently, the 4th Brigade is headquartered at Simpson Barracks in Melbourne. It consists of about 2,400 personnel, who are based in a number of locations in Melbourne and regional Victoria. The brigade currently consists of the following units: Headquarters 4th Brigade 4th/19th Prince of Wales' Light Horse, Royal Australian Armoured Corps 5th/6th Battalion, Royal Victoria Regiment 8th/7th Battalion, Royal Victoria Regiment 12th/40th Battalion, Royal Tasmanian Regiment 22nd Engineer Regiment, Royal Australian Engineers 108th Signals Squadron; and 4th Combat Service Support Battalion. References Citations Sources Brigades of Australia Military units and formations established in 1912 1912 establishments in Australia