John Essex Clark had a fair career, that would be a good read.
I have noticed most of the excellent books on ANZAC history have already been listed. But also check out the following.
Those ragged bloody Heros: From the Kokoda Trail to Gona Beach by Peter Brune, (which is excellent) and,
Maverick Soldier: An Infantryman's Story by John Essex Clark.
John Essex Clark had a fair career, that would be a good read.
Gallipoli Diary is good to read esp about tunnel warfare towards the end.