I haven't seen it happen in years, and there's been plenty of wars on BT and Dwi. Might have happened a few times without me noticing, but that just goes to say how much of an impact it had, especially if on BT as I was involved in most of the wars one way or another there.
The times I've seen people gone missing are usually due to capture in battle. Unless it's the general/marshal and he's the only active guy in command of the armies, it doesn't tend to harm much.
So you mean it is a problem for about 60-70% of the realms in the game.
