"My horse! Hold your fire--he has my horse!"
To stop firing would be "suspendre le tir", but I think you probably want "ne pas tirer" which would convey not starting to fire. So, that gives:
Mon cheval! Ne tirez pas--il a mon cheval!
But I would probably say "il a pris mon cheval" (he has taken my horse). It just "yells" better with the extra syllable.
What colour is yours, Burrell?
Skipping a bit to post that, according to the Buffista Calendar, today is Scrappy's birthday.
Happy birthday, Scrappy! With lots of wishes for a great day and a wonderful year!
Burn, Scrappy, Burn! Happy Birthday Inferno!
Have a great day!
How could the first horse have died, preferably in a way that's not my character's fault but that he could feel guilty about anyway? I thought of stepping in a rabbit hole, but that seems too cliche. They're in moderately rough/hilly country, FWIW, and the horsie that has to die is a fine Irish-bred hunter.
Based on something that happened to someone my dad knew, (whitefonted to spare those who'd rather not read about horsie death)
the horse could misstep while taking an obstacle (fence, fallen tree, stone wall) fall onto a rather large broken branch, getting one hell of a puncture wound in its neck and bleeding out nastily.