To request U.S. Army unit histories, write to the National Archives and Records Administration (NARA) at College Park, ATTN: Archives II Textual Reference Branch (NNR2), Room 2600, 8601 Adelphi Road, College Park, Maryland 20740
To obtain a copy of your Official Military Personnel File (OMPF), write the National Personnel Records Center (NPRC), 1 Archives Drive, St. Louis, Missouri 63138. Your OMPF will provide medical records, unit assignments, DD214 forms, and orders of personnel actions such as promotions and awards/commendation.
To obtain information concerning your individual awards, write to the U.S. Army Human Resources Command, KNOX-HRC-PDP, 1600 Spearhead Division Ave, Ft. Knox, KY 40122 or call them at (502) 613-9126