rings a bell as a Leavenworth, KS unit but I could be wrong (very easily). And I was partially wrong...
About June 1, 1885, the regiment, under command of Lieut.-Col. J. J. Coppinger, left Montana, and proceeded to the Department of the Missouri. The Headquarters, Staff, Band and Companies E and F, were assigned to station at Fort Leavenworth; Companies A, B and D, at Fort Hayes; C and I, at Fort Gibson; and G, H and K, at Fort Reno. Colonel Ruger assumed command of the regiment, post of Fort Leavenworth, and the U. S. Infantry and Cavalry School, June 29, 1885.
On the 19th of March, 1866, Colonel Ruger was appointed a Brigadier-General, U. S. Army, and was succeeded in the command of the regiment by Colonel John. E. Yard. In May, 1886, the Headquarters, Staff and Band were transferred to Fort Hayes, Kansas.
Colonel Yard died at Fort Hayes on the 17th of February, 1889, and was succeeded by Colonel Henry M. Lazelle, who joined in October of that year.
During the month of April, 1889, Companies F, G and K were ordered from their respective stations for field service in Oklahoma.
In October, 1889, Headquarters, Staff, Band and Companies A, B, C, E, G, H and K left their respective stations and proceeded to the Camp of Instruction, Camp Schofield, I. T., for instruction in field duties, etc.
The 18th Infantry having been relieved from duty in the Department of the Missouri, and assigned to duty in the Department of Texas, with station at Fort Clark, the Headquarters, Staff, Band and Companies A, B, C, E, G, H, I and K, under command of Major G. K. Brady, left Camp Schofield after the conclusion of the field exercises, and proceeded thither. Company D from Fort Hayes, and Company F from Fort Lyon, arrived at Fort Clark in November, 1889.
In pursuance of G. O. 76, A. G. O., 1890, Companies I and K were skeletonized, the enlisted men being transferred to other companies.
The entire regiment is now serving at Fort Clark, Texas.
There's more info if you follow the link.
.***
