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, where they served in the trenches along the Western Front.