I've had a love for Australia for decades.I'd say that Breaker Morant is a classic...far better than A Few Good Men.
“The Light Horsemen” is a good film about the men of a Australian World War I light horse unit involved in Sinai and Palestine campaign’s 1917 Battle of Beersheeba.
I also liked the ANZAC TV series a film about well the ANZACs in WW I. First time I ever heard of Paul Hogan was this series.
Another good Aussie film this about Vietnam - “The Odd Angry Shot”. A film about the Australian SAS deployment in Vietnam. I think Byron Brown is in it.