The original link I gave some while ago to the Victorian Veteran's Virtual Museum which included a link to digitised unit war histories has become such a convoluted affair with various changes at the State Library of Victoria, I thought I would repost a more direct link to them.
Not all of the infantry history books have been digitised, some are more recent histories, still subject to copyright, which have had only the covers and list of contents digitised, but still useful for discovering what books are available.
I have created a number of local history projects for which you will find links on this blog. I am a community historian (ie, not paid) living in Essendon. The content of my Empire Called database (see the link to the PBWorks website) is the result of nearly 25 years' research. The Empire Called blog is a companion for the PBWorks website of the same name.
Time Travellers in Essendon and Flemington is set up in the same way, with a website and a blog to report additions to the website. The website is a vehicle to publish longer pieces of research that are too long for newsletters. It also includes various indexes I have worked on for many years, plus photos from various sources which I date and describe in greater detail. You may find something of use for your research.