I didn't read the original post as requesting a battle summary - but instead requesting that the 'heartbeat' screen work for stunned and dead soldiers as well.
At least, in one of the UI's there's three tabs along the side. One's Options, one's inventory, and one gives details of the chosen soldier. Statistics, skills, heartrate, health and morale. It works fine for normal and even panicked soldiers. But if they're stunned or dead you can't 'select them', and thus can't see their stats.
If you could select them, you could see where exactly they died. Whether they are just stunned unconscious or actually dead. Perhaps even seeing if he was the one guy carrying necessary widget x.