At the battle of "Little big Horn" it is said that there was only one "survivor" from the army's side. That "survivor" had a breast collar with a number inscribed on it. What was that number?

Hi Mozart,
I found an article about Comanche, the horse belonging to Captain Myles Walter Keogh, with several photographs. The number on the collar is "7".
The Quest For Comanche

"7" for the seventh cavalry . It was certainly lucky seven for this horse, Good finding dg. Thanx