Early in 1916, those in command of the AIF had serious planning to do. The successful enlistment campaigns had generated thousands of new recruits, and these men were arriving in Egypt at the same time as those returning from the Dardanelles. The decision was made that the existing battalions would all be split, with half the experienced personnel joining new battalions. Efforts were made to ensure the geographical makeup of the battalions was maintained – so those from South Australia continued to serve together. Thus, over the coming months, the 10th Infantry Battalion would be split to form the 50th, and the 27th to form the 48th etc.