Custer's dead and around the bloody guidon of the immortal Seventh Cavalry lie 212 officers of the main. Sioux and Cheyenne are on the war path. By military telegraph news of the Custer massacre is flashed across the long, long miles to the southwest. By stagecoach to the hundred settlements and the thousand farms standing under threat of Indian uprising. Pony Express riders know that one more such defeat as Custer's and it would be 100 years before another wagon train dared to cross the plain. And from the Canadian border to the Rio Bravo 10,000 Indians—Comanche, Arapaho, Sioux, and Apache under Sitting Bull, and Crazy Horse, Gaul, and Crow King—are uniting in a common war against the United States cavalry.