Australian servicemen and servicewomen are still subject to military law and courts martial, same as the USA. And sexual abuse and harassment is still a serious issue [0].
[0] http://www.news.com.au/news/australian-navy-faces-male-sex-c...
But in her case (and in most others here), outside agencies will step up to the plate and ask serious questions and take charge of the situation if defence force personnel are seen to be unbecoming of their conduct.
Do the most senior generals in the US military draw the line in the sand like David Morrison did a couple of years back? [1]
Except on Nauru?
http://kvpr.org/post/save-children-ex-employee-leaks-details...
And while it may be cognitively useful to pretend Australian border defense is not a military issue, you have created a ranked force defending the state's "territorial integrity" through the use of force.
You originally wrote, "I find it at odds that a nation that has such ardour and pride for their servicemen and servicewomen would basically condone human rights abuse by and unto those same personnel."
The UN has repeatedly decried Austrlia's migration policies as human rights abuses.
The reason migration policies are germane, even if they're enforced by civilians, is because they're an example where Australians exhibit the same blind spots you're decrying in people from other countries.
If you're genuinely curious how people take pride in flawed governments, look closer to home. Really though, it's a universal human condition.
But while we do hold our service personnel in high esteem and treat them with respect, we also hold them accountable and try very hard to stamp out incidences of human rights abuse, gender inequality, bullying etc. within our defence force.
We tend not to let patriotic fervour limit that accountability.