This engagement, as far as I can see, was conducted correctly.
You forgot the part where they shot and killed unarmed people just trying to help the wounded. People who were not carrying anything that was visible in the video other than an injured man.
Now, give me mod points or Something Terrible will happen. Muahahaha.
Little known fact about Middle Earth: The Hobbits had a very sophisticated computer network! It was a Tolkien Ring...