conducted by the inspector-general of the australian defence force, and headed by the new south wales supreme courtking into dozens of alleged incidents, an investigation that's had to penetrate the veil of secrecy around the special forces. glenn: we have obligations at international law, domestic law, and indeed moral obligations to not ignore these sorts of allegations. there is potential for a prosecution under--or certainly for charges to be laid under the war crimes murder provisions of the commonwealth criminal code. mark: the activities of braden chapman's squadron in afghanistan in 2012 are of key interest to the inspector-general. braden: it's definitely affected me. you try to look back at your career as--try and be proud of it, but then you've got all these incidents and you know, you see yourself as part of the bad guys. i just feel if people don't come forward while this investigation's going on, then it's just gonna be swept under the rug again. ♪♪♪ ♪♪♪ mark: another incident that haunts braden chapman happened during a raid early in his deployment in march 2012. it involved the deat