A number of Australian organisations provide information and digital resources about service people and their experiences.
The State Library of Victoria has a project to digitise World War I unit histories -http://handle.slv.vic.gov.au/10381/90000
Discovering Anzacs is a database of service people who enlisted in Australia and New Zealand and provides digital copies of their service records. Information about those who served in the Boer War will also be added. Registered users of Discovering Anzacs can transcribe records, add key data from the military records to the summary for a serviceman and upload images and stories. There is also a detailed timeline of events during the Boer War and World War I.
This British site is a subscription website containing information about British service people serving in many wars including Crimean War, Napoleonic wars, Boer War, World War I and World War II. There is no cost involved in searching the index but you need to subscribe to view the information.
A recent feature is the provision of war diaries that have been digitised and may be downloaded for no charge - http://www.forces-war-records.co.uk/Library/Search?category=War+Diary.