On the other hand, to them, the Americans who were hiding in the jungle, were terrorists.
All that I am saying, is that there is a vital reason why people in the military must identify themselves. If you fail to identify yourself as a member of your country's military, then do not cry if civilians are harmed because of your action.
Even if an individual has been performing the described acts in section 74, they are not liable to being executed out of hand without the benefit of a military tribunal - per section 73 they remain "protected persons".
And it's that right to a trial which makes hash of your argument - murder of captives, whatever their status, is simply outright prohibited by the Geneva Conventions. (Convention III, Article 3, 1 a & d.)
BTW, for argument's sake I'll grant you the possibility that the individuals in the video may have been members of the BiH Armed Forces - but that does not alter the case one iota as to the criminal nature of their fate if their executions were extrajudicial.
So if you can find any Serbian military tribunals operating in the aftermath of Krivaja 95, you'll be able to continue your case.
Good luck - nobody else has been able to come up with any, and that includes some fairly senior officers in the Bosnian Serb Army.