Many of Spotted Tail's young men were getting up war parties to drive back the miners and settlers who were organizing on the Missouri River to enter the Black Hills. It was a violation of our treaties with the Indians, and it was part of the duty of the army to see that the treaties were respected. Captain Fergus Walker, 1st Infantry, wrote me from a point eighty miles east of Wounded Knee, May 15, 1875, that he had captured one such invading party and sent it under guard to Fort Randall, but that his thus greatly weakened force was unable to cope with others, particularly Major Gordon's mining company. He asked me, accordingly, to co-operate with him in this work, and arranged for the Indian scout by whom he sent the letter to intercept him on the Niobrara River with my reply. General Sheridan's General Order No. 2, of March 17th, directed commanding officers in Indian reservations adjacent to the Black Hills "to burn the wagon trains, destroy the outfits and arrest the leaders, confining them at the nearest military post," of trespassers found on a reservation. Accordingly, with two companies of cavalry and a battery of gatling guns, commanded by Lieutenant Rockefeller, I marched to relieve Captain Walker. Arriving at Antelope Creek at night, I sent two men in citizens' clothes to Walker's camp to tell him I would at daylight surround Major Gordon's mining company. At daybreak I threw my companies into line, the battery in the center, and when Walker's force appeared, Gordon's men, wakened by the noise, found themselves utterly helpless. Gordon's camp was in a river bend, between precipitous bluffs, with only a few hundred yards' space for entrance or exit. Seizing Gordon and putting him in a bull pen, I ordered his second in command, Mr. Brockert, to parade his men and surrender their arms. While doing this, one of their guns went off. I called out they might have the first shot, but we would have the last, when they submissively declared they would make no resistance. The prisoners were sent back to Fort Randall under Captain Walker, except Gordon, whom I took to Sheridan, where he was put in the guard house. Both the newspapers and the public at Sioux City made complaints about my "arbitrary and unlawful act," and the grand jury found true bills against me, but I never had service.