The reorganized command for the campaign, which assembled at Fort Fetterman, Wyoming, included fifteen troops of cavalry—about nine hundred men—ten of the Third, under command of Colonel Evans, and five of the Second, under Major Noyes, the whole being under the command of Colonel William B. Royall, of the Third.[57] There were also three companies of the Ninth Infantry and two of the Fourth, a total of three hundred men, under the command of Colonel Chambers. There was an abundance of transportation, a long wagon train, and an invaluable pack train. The troops were generously provided with everything necessary for the hard work before them. It was the largest, and it was believed to be the most efficient, force which had ever been sent against the Indians in the West. Crook, an officer of large experience, especially in Indian fighting, assumed personal command of the expedition on the 28th of May, 1876. On the 29th the march began. The objects of the campaign were the villages of Crazy Horse and Sitting Bull, which were believed to be somewhere on the Rosebud River. The topography of that country is well known now, but then it was more or less of a terra incognita—rather more than less, by the way. Certainly, this was true after the Tongue River was reached. The advance was made at first up the Bozeman trail, past Fort Reno, and over the battle-fields around the ruins of abandoned and destroyed Fort Phil Kearney, which were objects of much interest to the soldiers. On the 9th of June the army encamped on the south side of the Tongue River, near the point where that stream intersects the Montana boundary line. Crazy Horse[58] had been fully advised by disaffected Indians at the agencies and military posts, as well as by his own daring scouts, of all these preparations that were being made to overwhelm him. He had sent to Crook a specific warning not to cross the Tongue River, and declared his intent to attack him immediately he reached that stream. To prove that his threat was no idle boast, he mustered his warriors, and at half after six o’clock on the evening of the 9th, from the high bluffs on the other side, opened fire upon the camp. Through a fortunate mistake the Indians directed their fire to the tents of the camp, imagining that they would be full of men. They happened to be empty. The Sioux soon got the range, and the camp was swept with bullets. They ripped open mess chests, shattered the sides of the wagons, destroyed the baggage, killed a few horses, but did little damage to the men.[59]