The Maryland State Archives
350 Rowe Boulevard
Annapolis, MD 21401MD
Toll free (800) 235-4045
or (410) 260-6400
fax: (410) 974-2525
Directions and Hours
The Maryland State Archives does not have any on-line databases. The following links are to research information on files on hand at the archives. The "Maryland Indexes" would seem to be very valuable to anyone attempting military research in Maryland.
Colonial Wars Revolutionary War The Whiskey Rebellion,
the War with France, and the War of 1812
The  Mexican War
The Civil War Spanish American War World War I World War II
General Sources
Maryland National Guard Service Records Index
large file – 8.6mb

Source: The Maryland State Archives