Battle of the Greasy Grass

[Gene C]

But yes, this does look like an actual photo of the battlefield -

Good guess. I'll have to check....but on second thought - Comanche was wounded severely in the battle. He was shot several times. This animal appears healthy, so this is probably a staged photo -

I kinda of wondered about it being staged. There is the plaque in front of the horse, the horse was suposedly found two days after the battle, as you mentioned he looks in good shape for having been badly wounded, and the horse in the background does not look dead for 2 days