"On June 21st, Custer met on the Yellowstone River with Colonel John Gibbon and their superior, Brigadier General Alfred Terry. They knew nothing of Crook's retreat. Terry ordered Gibbon to march to the mouth of the Little Bighorn, while Custer and the Seventh Cavalry would try to locate the Indians and drive them down the valley toward Gibbon and annihilation. As Custer rode off, Gibbon called out to him, "Now Custer, don't be greedy...wait for us." "No," he said, "I will not.""