Charles Edwin Woodrow Bean was an Australian journalist, war correspondent for the Sydney Morning Herald. He was also a Historian and Editor who wrote in a particular style two very detailed accounts of what happened to the Australian forces on a day-to-day basis during WWI and WWII.
Official Histories website.
Once you have found the Units, Battles Dates and Battle Maps related to your soldier or serviceperson you will find these documents and diagrams more resourceful. The use of Divisions, Brigades and Battalions are most commonly used. The Battlefield tactics of the Generals and commanders are also given with final results including casualties.
Charles Bean also made some very good maps showing Australian key positions on the battlefield. Using the exact scale of the French and Belgium trench maps. These can be superimposed on transparencies and used over Google Earth.
Fromelles (page 381, Map No.6)
Pozieres (page 532, Map No.8)
Flers (page 897, Map No.9)
Bullecourt (page 310, Map No.2)
Messines (page 610, Map No.3)
Ypres (page 740, Map No.4)
Villers-Bretonneux (page 341, Map No.1)