So if some folks will help with the math:
- assuming six cannons per northern battery and
- six horses per cannon
- six caissons
- six horses per caisson
- one battery wagon pulled by six horses
- one traveling forge pulled by six horses
- 12 "extra" horses for the artillerymen
- approximately 12 horses per battery for men with some rank
This comes to about 108 horses per battery. If memory serves me, I think that I heard somewhere that an average battery had about 110 horses.
Now wait a moment, if that 12 extra horses is per cannon, then that is another 60 for the other five cannons. So maybe it is about 170 horses for a mounted battery.
Some nomenclature notes to make:
1. "Mounted battery" does not mean "horse artillery." "Mounted" actually refers to your standard field battery. Confusing isn't it? Trips me up and I had forgotten about the distinction until reviewing this yesterday. During the period this was likely to be misused as well.
2. And to make it more confusing "foot" artillery actually means "heavy artillery" and seems to apply to the siege train in particular which typically rolled along behind the reserve and had to be set up, rather than just going into battery.
3. "Flying artillery" is another name for horse artillery.
4. "Light artillery" is just another name for field artillery (I read somewhere that it was supposed to refer to "horse artillery" in particular, but the designation of units didn't use it that way.)
The 1864 manual gives several horse counts depending on gun type, etc. I'll give you what it has. The closest to the above for the light/field/mounted artillery (not horse arty) is when the battery is equipped with 6 pdr guns.
Draught horses for 6 gun/limbers and 6 caisson/limbers = 72
Draught horses for battery wagon and traveling forge = 6 + 6 = 12
Spare draught horses = 7
Saddle horses for sergeant, artificers, and buglers = 8 + 6 + 2= 16
Spare saddle horses = 3
That total comes it at 110.
Now for the Napoleon the ammunition chests carry fewer rounds, so an extra caisson/limber is added per piece, plus the heavier piece brings along more spare horses.
Draught horses for 6 gun/limbers and 6 caisson/limbers = 72
6 additional caissons = 36
Draught horses for battery wagon and traveling forge = 6 + 6 = 12
Spare draught horses = 7
Saddle horses for sergeant, artificers, and buglers = 8 + 6 + 2= 16
Spare saddle horses = 3
That total comes it at 149.
Add 12 more saddle horses per piece for the horse artillery variant (not that Napoleons were being used as horse artillery.) So add 72 saddle horses to the 110 for typical horse artillery fully equipped. My guess is that the 3" pieces as horse artillery would have the same total count as the 6 pdr for horse artillery. That would come out to 182 total draught and saddle horses.
And "for service on the plains" (Indian fighing) it says "at least one pair of spare draught horses to each carriage should be provided." I'm not sure if that is just using the full 12 spare horse count for the gun carriages, or if that includes the caissons, battery wagon and forge as well.