A coup count, Dog Soldier Ledger, pl. 91, p. 189.
Another illustration from the Dog Soldier Ledger (p. 100, p. 203) shows White Bird lancing a white man. White Bird’s horse is painted with a circle identified by Mails as signifying fighting from behind breastworks or from some sort of defensive position. Additional illustrations of White Bird in the same publication show the same symbol on his horse.
A range of motives and reasons led to painting of their horses by Native American Plains warriors, and many of these motives and reasons were of such importance that the same symbols were occasionally portrayed on rock art of horses. Indeed, many of these symbols can often be found independantly painted or pecked into the rock as well, but that is a subject for a later posting.