Units by State:
Units by State:
Service at Relay House, 5/20/1861-6/6/1861
WIKIPEDIA - “The 1st Maryland Infantry, Potomac Home Brigade was organized at Frederick, Maryland, beginning August 15, 1861, and mustered in on December 13, 1861, for three years under the command of Colonel William P. Maulsby Sr.
Companies A, B, D and I were recruited in Frederick County. Company C was recruited from Baltimore City. Companies E, F and H were recruited from Washington County. Company G comprised men from Baltimore, Carroll and Frederick Counties. Company K was from recruited Baltimore city and Frederick County.
The regiment was attached to Banks' Division, Army of the Potomac, to March 1862. Unassigned, Banks' V Corps, and Department of the Shenandoah to May 1862. Railroad District, Middle Department, to July 1862. Railroad District, VIII Corps, Middle Department, to September 1862. Annapolis, Maryland, VIII Corps, to March 1863. 1st Separate Brigade, VIII Corps, to June 1863. Lockwood's Brigade, VIII Corps, to July 1863. 2nd Brigade, 1st Division, XII Corps, Army of the Potomac, July 1863. 2nd Brigade, Maryland Heights, Division West Virginia, to December 1863. 2nd Brigade, 1st Division, West Virginia, to April 1864. Reserve Division, Harpers Ferry, West Virginia, to January 1865. 3rd Brigade, 3rd Division, West Virginia, to April 1865.
The 1st Maryland Infantry, Potomac Home Brigade mustered out of the service August through December 1864. The regiment continued to recruit for veteran service, and its designation was changed to the 13th Maryland Infantry.”