 Following this the 27th Battalion returned to Egypt , where the AIF undertook a period of training and re @-@ organisation as reinforcements arrived from Australia . During this time the AIF was expanded from two infantry divisions to four – with a fifth forming in Australia – and many infantry battalions that had seen service at Gallipoli were split up to provide cadre staff for the newly raised battalions . The battalions of the 2nd Division , however , were not split up in this manner and the 27th Battalion remained intact . 
