Thirteen years after that Henry was commanding the Ninth Cavalry, with headquarters at Fort McKinney. The Ninth Cavalry was a regiment of negroes. From the overcoats which they wore in Wyoming in the winter they were called the “Buffalos,” and sometimes they were facetiously referred to as “Henry’s Brunettes.” Whatever they were called, they were a regiment of which to be proud. In 1890 occurred the last outbreak of the Sioux under the inspiration of the Ghost Dancers, which culminated in the battle of Wounded Knee. Troops from all over the United States were hurried to the Pine Ridge Agency as the trouble began. On the 24th of December Henry and the “Brunettes” were ordered out to the former’s old stamping ground in the Black Hills on a scouting expedition. It was bitter cold that Christmas Eve, but, thank God! there was no blizzard. Fifty miles on the back of a trotting horse was the dose before them. They rested at four A.M. on the morning of Christmas Day. Some of the garments the men wore were frozen stiff. They had broken through the ice of the White River in crossing it. How the men felt inside the frozen clothing may be imagined. Eight miles farther they made their camp. They did not have much of a Christmas celebration, for as soon as possible after establishing their base at Harney Springs they went on the scout. They hunted assiduously for several days, but found no Indians. These had gone south to join their brethren concentrated about the agency. One day they rode forty-two miles in a vain search. They got back to camp about seven o’clock. At nine a courier from the agency fifty miles away informed them of the battle of Wounded Knee, and that five thousand Oglala Sioux were mustering to attack the agency. “Boots and Saddles!” instantly rang out, and the tired troopers mounted their jaded horses again. This time the camp was broken for keeps, and tents were struck, wagons packed to abandon it. It was a bitter cold night. There was a fierce gale sweeping through the valley, blowing a light snow in the faces of the men wrapped to the eyes in their buffalo coats and fur caps. They pushed steadily on in spite of it, for it was Henry’s intention to reach the agency in the dark in order to avoid attack by the Indians.