forgot the 4th Infantry, with which he had served as a lieutenant in Mexico and on the frontier. As recognition of its valor during the Civil War, he designated it as the guard unit during the formal surrender ceremony. Survivors of the 4th U.S. Infantry marched in the grand review of troops in Washington D.C. in May 1865, immediately following the war. Post–Civil War After the Civil War, the regiment returned to the West, now to Fort Laramie, Wyoming Territory in 1866. In 1867 the 4th Infantry built Fort Fetterman near present-day Douglas, Wyoming, completing it in July, garrisoning it, and making the new fort the regiment's headquarters. On 31 March 1869 the 4th Infantry was consolidated with the original 30th United States Infantry Regiment, and the resulting consolidation retained the 4th Infantry's designation. Companies A and B of each organization were carefully blended together to retain their original status. On 9 December 1869, Private Jonathan Schewen of the regiment was killed in an Indian attack at the Horse River, in Wyoming Territory, and in 1871, a detachment of the 4th Infantry was sent to Louisville, Kentucky and split into small groups to chivvy moonshiners in Kentucky until 1872. On 4 March 1876, Sergeant Patrick Sullivan of the 4th was ambushed and murdered by outlaws at Fort Fetterman. In March 1876, Companies C, and I of the 4th Infantry accompanied Brigadier General George R. Crook's Big Horn Expedition, and on 5 March 1876, participated in the Fort Reno Skirmish near the abandoned Fort Reno, in Wyoming Territory. In May and June 1876, Companies D, and F of the 4th Infantry Regiment were with General Crook's southern column and fought at the Battle of Prairie Dog Creek on 10 June 1876, and at the Battle of the Rosebud on 17 June 1876, where Crook ordered the five Infantry companies that were present to advance to bluffs overlooking Rosebud Creek in support of his Indian scouts. The men of Company D, 4th Infantry, under Captain Avery B. Cain, were first to reach the crest of the ridge north of the Rosebud, where they opened fire. Company F, of the 4th Infantry, and Companies C, G, and H, of the 9th United States Infantry Regiment, supported Company D's charge. The success of these five Infantry companies was critical to the outcome of the Battle of the Rosebud. Their enhanced firepower kept the Sioux