Here’s a list from the O.R. of the disposition of the U.S. Army troops stationed in the Department of the West (“embracing the country west of the Mississippi River and east of the Rocky Mountains except the State of Texas and the Territory of Utah, and all of New Mexico east of the one hundred and tenth degree of west longitude”) between January 1 and April 15, 1861:

Fort Leavenworth, Kans.:
Co. I, 1st Art. - To Fort McHenry, Md., Jan. 7-12; to Washington, D.C., Jan. 29.
Co. A, 2d Art. - To Washington, D.C. Jan. 7-13; to Fort Hamilton, N.Y., April 4-5; to Fort Pickens, Fla., April 6-19.
Co. H, 2d Artillery - To Fort McHenry, Md., Jan 7-12; to Washington, D.C., Feb.1; to Fort Hamilton, N.Y., April 4-5; to Fort Pickens, Fla., April 8-21.

Fort Riley, Kans.:
Co. G, 2d Infantry – No change.
Co. H, 2d Infantry – To Fort Larned, Kans., April 11-19.

Fort Scott, Kans.:

Co. C and K, 2d Dragoons - To Fort Riley, Kans., Jan. 7-12; to Fort Leavenworth, Kans., Jan. 29-Feb. 3.

Miami Valley, Kans.
Co. B, 2d Infantry – To Fort Scott, Kans., Jan. 5-7; to Saint Louis Arsenal, Mo., Feb. 1-7.

Fort Wise, Kans.:
Co. F, G, H, and K, 1st Cavalry - No change.
Co. C and H, 10th Infantry - No change.

Fort Kearny, Nebr.:
Co. A, 2d Dragoons – No change.
Co. E and F, 2d Infantry – No change.

Fort Laramie, Nebr.:
Co. D and F, 2d Dragoons – No change.
Co. D and K, 10th Infantry – No change

Fort Randall, Nebr.
Cos. E, G, H, I, and M, 4th Artillery – No change.

Fort Ridgely, Minn.
Co. I, 2d Artillery – To Fort McHenry, Md., April 13-18.
Co. E, 3d Artillery – To Elkton, Md., April 14-24.
Co. F, 4th Artillery – To Washington, D.C., April 13-18.
Co. K, 4th Artillery – No change.

Fort Ripley, Minn.
Cos. C and K, 2d Infantry – No change.

Fort Abercrombie, Minn.
Cos. A, D and I, 2d Infantry – No change.

Fort Smith, Ark.
Cos. D and E, 1st Cavalry – No change.

Little Rock Arsenal, Ark.
Co. F, 2d Artillery – To Jefferson Barracks, Mo., Feb. 8-22.

Fort Washita, Ind. Ter.
Cos. C and I, 1st Cavalry – No change.

Fort Cobb, Ind. Ter.
Co. B, C, D and F, 1st Infantry – No change.

Fort Arbuckle, Ind. Ter.
Co. A and B, 1st Cavalry – No change.
Co. E, 1st Infantry – To Fort Washita, Ind. Ter.., March 28-30.