4th Potomac Home Brigade Infantry (U)

Regimental History and Service Record

Organization not completed
3 Companies organized and on duty guarding Baltimore & Ohio Railroad between Martinsburg and Harper's Ferry, W. Va., until August, 1862.
August 11, 1862 - Consolidated with 3rd Potomac Home Brigade Infantry (U)

An attempt to raise the Fourth Regiment of Infantry for the Potomac Home Brigade was made in the winter of 1861-62, but after Companies A, B and C had been recruited for three years, no farther progress was made.

Company A was organized at Hagerstown, Company B at Baltimore, and Company C in Frederick County.

After the completion of these three companies, they were assigned to guard duty along the line of the Baltimore and Ohio Railroad, between Harper's Ferry and Martinsburg, Va., until August 11, 1862, when they were consolidated with the 3d Regiment Potomac Home Brigade Infantry, Maryland Volunteers.