The 14th Brigade was an infantry brigade of the Australian Army. Originally raised in 1912 as a Militia formation, it was later re-raised in 1916 as part of the First Australian Imperial Force for service during World War I, the brigade was assigned to the 5th Division and served on the Western Front between 1916 and 1918 before being disbanded. It was later re-raised as part of the Australia's part-time military forces during the inter-war years. During World War II, the brigade was a Militia formation and it took part briefly in the New Guinea campaign with elements of the brigade undertaking defensive duties around Port Moresby before taking part in the fighting along the Kokoda Track and around the Japanese beachheads at Buna–Gona. The brigade was disbanded in mid-1943 as part of a rationalisation of Australian military forces as a result of manpower shortages.

The 5th Division was an infantry division of the Australian Army which served during the First and Second World Wars. The division was formed in February 1916 as part of the expansion of the Australian Imperial Force infantry brigades. In addition to the existing 8th Brigade were added the new 14th and 15th Brigades, which had been raised from the battalions of the 1st and 2nd Brigades respectively. From Egypt the division was sent to France and then Belgium, where they served in the trenches along the Western Front until the end of the war in November 1918. After the war ended, the division was demobilised in 1919.