It has uncovered what the head of Australia's armed forces says is a shameful record off a warrior culture among some soldiers.

He's apologized to the Afghan people from Sydney.

Shaimaa Khalil reports these Air Australia's Indian troops risking their lives in Afghanistan.

Their mission was to help the people against the Taliban insurgency.

It's May 2012 and the soldiers of three squadron essay essay heading north from there.

But this Australian documentary claimed unarmed civilians were unlawfully killed by some of those special forces.

The target is an insurgent bomb maker.

Now, after a four year internal inquiry, the Australian Defense Force has revealed that what some of these soldiers did on the battleground could potentially be a war crime.

Leave what these findings alleged.

The most serious breaches off military conduct and professional values, the killing, the unlawful killing off civilians and prisoners is never acceptable.

The inquiry found credible evidence that 39 Afghan men and teenagers had been unlawfully killed.

Allegations include junior soldiers being coerced into executing prisoners to get their first kill in a practice known as blooding, and that weapons were planted on victims to make it look like the killings were legitimate.

The defense chief apologized to the Afghan people and said the alleged violations would have devastated the lives of families and communities, causing immeasurable pain and suffering.

And many know that suffering all too well.

This man told us about the day his brother was allegedly killed by Australian troops.

Way were fishing and having a picnic.

Around noon, the foreigners carried out their raid.

They arrested my brother and took him to a corner.

A few minutes later, they shot him in the head three times and once in his stomach.

Once they'd left, we went over and saw my brother's dead body lying on the ground.

Especially Investigator will now be a pointed toe look at the findings, gather evidence and then presented to the public prosecutor.

It's a process that could take years.

It may well take Justus long for the culture inside the defense force to change, but the leaders no, there is no other choice.