San Bernardino Springs break out from the ground upon the Boundary Line and flow south into the Yaqui River, of which the San Bernardino River is the extreme head. These springs yielded an abundance of water for all our needs, and at one time had refreshed thousands of head of cattle, which have since disappeared under the attrition of constant warfare with the Apaches. The few days spent at San Bernardino were days of constant toil and labor; from the first streak of dawn until far into the night the task of organizing and arranging went on. Telegrams were dispatched to the Mexican generals notifying them that the American troops would leave promptly by the date agreed upon, and at last the Indian scouts began their war-dances, and continued them without respite from each sunset until the next sunrise. In a conference with General Crook they informed him of their anxiety to put an end to the war and bring peace to Arizona, so that the white men and Apaches could live and work side by side. By the 29th of April all preparations were complete. Baggage had been cut down to a minimum. Every officer and man was allowed to carry the clothes on his back, one blanket and forty rounds of ammunition. Officers were ordered to mess with the packers and on the same food issued to soldiers and Indian scouts. One hundred and sixty rounds of extra ammunition and rations of hard-bread, coffee and bacon, for sixty days, were carried on pack-mules. At this moment General Sherman telegraphed to General Crook that he must not cross the Mexican boundary in pursuit of Indians, except in strict accord with the terms of the treaty, without defining exactly what those terms meant. Crook replied, acknowledging receipt of these instructions and saying that he would respect treaty stipulations. On Tuesday, May 1st, 1883, the expedition crossed the boundary into Mexico. Its exact composition was as follows: General George Crook, in command. Captain John G. Bourke, Third Cavalry, acting adjutant-general; Lieutenant G. S. Febiger, engineer officer, aid-de-camp; Captain Chaffee, Sixth Cavalry, with Lieutenants West and Forsyth, and forty-two enlisted men of “I” company of that regiment; Doctor Andrews, Private A. F. Harmer of the General Service, and 193 Indian scouts, under Captain Emmet Crawford, Third Cavalry, Lieutenant Mackey, Third Cavalry, and Gatewood, Sixth Cavalry, with whom were Al. Zeiber, McIntosh, “Mickey Free,” Severiano, and Sam Bowman, as interpreters. The pack-mules, for purposes of efficient management, were divided into five trains, each with its complement of skilled packers. These trains were under charge of Monach, Hopkins, Stanfield, “Long Jim Cook,” and “Short Jim Cook.”