I am probably not telling anyone anything they don't know, but you can search a couple of sites for service history on your family, i have found it very interesting reading about family members who served in various wars whom i have never met.
The records supply, height, eye colour, where they signed up from, distinguishing features like tattoos etc and of course if they are run in for anything like AWOL, fighting, drinking etc a what wounds they received, where and if they died etc etc.
http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/SearchScreens/BasicSearch.aspx
http://discoveringanzacs.naa.gov.au/
The records supply, height, eye colour, where they signed up from, distinguishing features like tattoos etc and of course if they are run in for anything like AWOL, fighting, drinking etc a what wounds they received, where and if they died etc etc.
http://recordsearch.naa.gov.au/SearchNRetrieve/Interface/SearchScreens/BasicSearch.aspx
http://discoveringanzacs.naa.gov.au/