WW2 service records — National Archives of Australia [external website]
Search for your ancestor in the Army's service records for WWII. You will find a collection of papers relating to your ancestor such as their attestation (enlistment) form, service and casualty form, discharge form and in some cases, their photo. View the attestation form to find their age, date and place of birth, marital status, physical description and next of kin.
Some services records are available online. If the records are not online, you can buy a copy or visit the National Archives in Canberra to view the records.