The Odd Angry Shot - Aussie film from the 70s dealing with their involvement in Vietnam to stop the ****ing Commie *******s from spreading their perverted filth in the Antipodes. Rarely mentioned when the 'nam sub-genre of war films is discussed.
https://www.imdb.com/title/tt0079652/
Aussie films from that era are fab. BBC2 ran a terrific series of them in the early 80s, including Summerfield, Aussie Rules fitba film The Club ("He's been up his legless sister!"), Walkabout (Jenny Agutter with kit off), The Getting Of Wisdom, and a couple whose titles escape me - one about a travelling cinema, and another about a gang swicking the bookies before the telegraph was quick enough to get the results from the other side of the continent.