I support our military and believe they should be given as much leeway as possible to accomplish their mission. They don't require armchair generals or media parasites peering over their shoulders every minute to make sure they have executed their duty in accordance with U.N. regulations.
I'm no expert, but it sounds like you two may need to renew your loyalty oath.
I have not problem with the soldier's actions. As I previously mentioned, combat zone = killing. There is no time for asking questions.
But, the press should be reporting the killing in whatever its manifestations. One of my big problems with the US is we think war can be sanitary. It can't be. That does not mean we should shy away from it. But we should know the exact nature of what we are getting into so we can decide what actions are available.