Geronimo title
Geronimo Geronimo

On May 17, 1885 Geronimo and a band of other Apaches escaped into Mexico from the San Carlos Reservation northeast of Tucson.

In the story... John Farrington belongs to the 4th Cavalry and is part of a unit sent to find the renegades.
Apache Band Geronimo is on horseback at the center of the band
Photo taken March 27, 1886, in the Sierra Madre mountains of Mexico
Over a year later, Geronimo surrendered:
Surrender Memorial
Surrender Plaque