For medical information about volunteer soldiers who fought in the Mexican war, consult the National Archives series, "Carded Medical Records of Volunteer Soldiers in the Mexican and Civil Wars, compiled 1846 - 1865" found in [http://www.archives.gov/research/arc/ Record Group (RG) 94, Records of the Adjutant General's Office, 17862-1984, entry 534]. These cards relate to volunteers admitted to hospitals for treatment and may include information such as name; rank; organization; complaint; date of admission; hospital to which admitted; and date returned to duty, deserted, discharged, sent to general hospital, furloughed, or died. This series is arranged by state, thereunder by the number of the regiment (cavalry, infantry, and artillery are filed together under the common regiment number) and then by initial letter of surname.
*[https://catalog.archives.gov/id/28277783 List of Female Nurses, Cooks, and Laundresses Employed in Army Hospitals During the Civil War. NAID 28277783]