A member of Australia's Special Air Services regiment claims he was subjected to a brutal sexual assault as part of a secretive training program with the elite unit a decade ago.
Evan Donaldson has come to Canberra to speak with federal politicians about his ordeal and frustrations with the military bureaucracy.
In 2006, he said he was put through secret SAS "conduct after capture" training in which he endured horrific injuries.
Trooper Donaldson detailed an incident while he was blindfolded, handcuffed and wearing a thin hospital gown.
When the young recruit asked to go the toilet, an instructor viciously attacked him.
"I remember partially tripping in one instance because I couldn't see where I was going. Of course they have to escort you and one of the guards assaulted me with his knee to my buttocks, which resulted in a tear and bleeding," Trooper Donaldson told ABC News.
He told the ABC he had battled traumatic stress disorder as a result of the incident and because of his dealings with military bureaucracy.
Trooper Donaldson's wife Phoebe, a medical doctor, has accompanied him to Canberra for support.
"I hope that what we've gone through will stop it happening to other people and that the wider public can see what their country is doing to their heroes," she said.
Xenophon: 'Nothing short of a travesty of justice'
Independent senator Nick Xenophon said the alleged incident was unacceptable and cruel and must be resolved as soon as possible.
Photo: Evan Donaldson endured shocking injuries during a secret "conduct after capture" exercise. (Supplied)
"What Trooper Donaldson has been subjected to is nothing short of a travesty of justice," Senator Xenophon said.
"What he has gone through has been appalling. Defence needs to sort this out as a matter of urgency".
Trooper Donaldson, a father of one, said his family is seeking compensation because they are crippled with huge debts as a result of years of no wages and legal bills.
The Department of Defence said it could not comment on Trooper Donaldson's case unless he signed a privacy consent form.
However he has refused to do so based on his experience of dealing with the department during the past decade.