Does Mushin ever play any role in combat?
I googled that, and came up with a very strange page on martial arts psychology. However I did get this:
The mind could be said to be working at a very high speed, but with no intentions, plans or direction.
So I would say rarely. I spent the overwhelming majority of my time as a leader of men, so you are always remembering and following the broad plan and obeying the unofficial para motto - "half a year to plan, half a minute to execute" - plan as thoroughly as possible beforehand then move in with huge speed, aggression and co-ordination. That said,, a lot of it becomes second nature (does 'dash down crawl observe sights fire' mean anything to you?') so you don't have to think too much.
Are you ever told that you are thinking too much?
In general I tell; but when that's said it's
normally in jest. If there's a situation that the boss doesn't know how to deal with, we need to work out what to do if that happens. 'What if there's ten of them over that hill, corporal?' is often a valid question. Sometimes people just get annoying (especially cadets!) and ask stupid questions like 'what if there's a corps of them over that hill?'
Would you be inclined to save Prince Harry's butt preferentially to any of the other men?
I'll pretend I'm still under the colours for this - you save anyone who needs it as well as you can, but if there was a definite choice between him or someone else it would depend. I don't think I can answer that.