That's a pretty broad question. Is there an angle you are particularly interested in? For instance, "How did Australia's identity and relationship with Great Britain change after WW1?" or "How did the Australian Governments foreign policy change after WW1?"

A more targeted question will encourage answers to this large subject.

I'll be back in a bit to write something anyway.

Hiya, this question reminds me of one of the first /r/AskHistorians podcasts; it's been a while since I gave it a listen, but you may find it of interest since it focusses on the impact of WWI on Australia and NZ, particularly wrt memorialising the events and losses.

Here's a discussion thread; the link to the podcast is at the top. Check it out. https://www.reddit.com/r/AskHistorians/comments/23u4sl/askhistorians_podcast_episode_009_discussion/