The Fifth Cavalry were to rendezvous at Cheyenne. The four companies at Fort Hays went by railroad, first to Denver and then north to Cheyenne. On the seventh of June there they were. They marched north to old Fort Laramie. Here the regiment was ordered to guard the great Sioux and Cheyenne trail that crossed country from the South Dakota reservations to the hostile Powder River and Big Horn villages.
There were several skirmishes, but the traveling Indians got away. On July 1 the new colonel joined the regiment. He was Brevet Major-General Wesley Merritt, from General Sheridan's staff at Chicago division headquarters. As he was a full colonel, he outranked Lieutenant-Colonel Carr, and became commander.
On July 6 terrible word was received from Fort Laramie. Buffalo Bill first announced it, as he came out of General Merritt's tent.
"Custer and five companies of the Seventh have been wiped out of existence, on the Little Big Horn, by the Sioux. It's no rumor; General Merritt's got the official dispatch."
Sunday, of last week! Twelve days ago, and they only just now heard! And while they had been longing for Indians, and envying other columns that might be having fights,--even a little jealous of the dashing Custer's rival Seventh, who were hunting Indians instead of watching a trail--this same Seventh had been battling for their lives.
Of course, reinforcements would be rushed in at once. The Fifth would have their chance. And sure enough, the order came for the Fifth Cavalry to march north in earnest and find the General Crook column in the Big Horn country.
The route lay from southeastern Wyoming north-west through Fort Laramie and Fort Fetterman (which was farther up the North Platte River), and on to the Big Horn. But suddenly the march was stopped. A dispatch from the Red Cloud agency of the Sioux and Cheyenne reservation said that eight hundred Cheyennes had prepared to leave on the next day, Sunday, July 16, to join Crazy Horse and Sitting Bull.
There was only one thing for General Merritt to do: throw his troops across the-war-trail between the reservation and the wagon-road of the white settlers to the Black Hills, and turn the runaways back. War Bonnet Creek of extreme southwestern South Dakota, west of the Red Cloud reservation, was the place where the red trail struck the white trail; Chief-of-Scouts Buffalo Bill knew it well. The troops must be there by Sunday night. It now was Saturday noon; the distance, by round-about route, was eighty-five miles; the Cheyennes had only twenty-eight to come. General Merritt resolved to get there first.