 They followed their trail into what is now Yuma County, Colorado.The scouts trailed the Indian raiding party from Sheridan into Colorado; signs indicated that the opposing force considerably outnumbered the scouts, but the unit nonetheless pressed on.Around dusk on the 16th, Forsyth and his men arrived in the vicinity of the "Dry Fork of the Republican River" (reported at the time as "Delaware Creek"—now the Arikaree River) and made camp on the south bank.