Suppose—remote contingency—he were not entirely successful in his attack on the Indians? Gibbon must be somewhere in the vicinity. A day or two would probably bring him to the rescue. Could he not fight a waiting battle, if necessary, until the other column arrived on the field? Was it not absolutely incumbent upon him to embrace the opportunity presented to him? He had what he believed to be the finest regiment of cavalry in the service. He had tried it, tested it, on many fields; he knew, or thought he knew, the temper of his officers and men. He decided to attack. Indeed, there was nothing else for him to do. Fight he must. In the opinion of distinguished military critics who have expressed themselves upon the point, from General Sheridan down, he was justified in his decision. In that opinion I concur. And there is no evidence that he ever contemplated doing anything else. He had arranged matters to bring about the opportunity, and he had no hesitation in embracing it. Evidently, he had absolutely no premonition of defeat or disaster. A little before noon he communicated his intention to his officers and men. He divided his regiment into three battalions. To Major Marcus A. Reno,[76] an officer with no experience in Indian fighting, he gave Troops A, G, and M; to Captain Benteen, a veteran and successful Indian fighter, Troops D, H, and K; Captain McDougall, with Troop B, was ordered to bring up the mule train and take it in charge; Custer himself took the five remaining troops, C, E, F, I, and L. They left the ravine, and about noon crossed the divide which separated them from Little Big Horn Valley. Benteen was ordered to swing over to the left and search the country thoroughly in that direction, driving any hostiles he might come across into the village and preventing any escape of the Indians to the southward and westward. Reno was to follow a small creek, sometimes called Reno’s Creek, to its junction with the Little Big Horn and strike the head of the village, supposed to be there. Custer’s movements would be determined subsequently, although for the present he followed Reno. McDougall came last, following their trail with the slow-moving train, which dropped rapidly to the rear as the others proceeded at a smart pace. Benteen at once moved off to the westward, while Reno, followed by Custer, started down toward the valley of the Little Big Horn. This river is a rapid mountain stream of clear, cold water, with a pebbly bottom, from twenty to forty yards wide. The depth of the water varies from two to five feet. While it is very tortuous, the general direction of the stream is northward to the Big Horn, which flows into the Yellowstone. The valley, from half a mile to a mile in width, is bordered by the bare bluffs. Along the river in places are thick clumps of trees. The Indian camp, the end of which they could see as they crossed the divide, was strung along the valley for several miles.