Introduction from accompanying pamphlet, p. 1: "On the 105 rolls of this microfilm publication, M 1822, are reproduced the compiled military service records of volunteer Union soldiers belonging to the 14th through the 19 infantry units organized for service with the United States Colored Troops (USCT). The USCT included 7 numbered cavalry regiments; 13 numbered artillery regiments plus 1 independent battery; 134 numbered infantry regiments; Brigade Bands Nos. 1 and 2 (Corp d'Afrique and U.S. Colored Troops); Powell's Regiment Colored Infantry; Southard's Company Colored Infantry; Quartermaster Detachment; Pioneer Corps, 1st Division, 16th Army Corps; Pioneer Corps, Cavalry Division, 16th Army Corps; Unassigned Company A Colored Infantry and Unassigned USCT. There are also miscellaneous service cards arranged alphabetically by surname at the end of the unit records. The records reproduced are part of the Records of the Adjutant General's Office, 1780's-1817, Record Group (RG) 94."