Entries include (as available) the name of the unit and any nicknames or other mistaken designations; a summary of the unit's organizational details: its date and location of organization, mustering into service, the number of companies for battalion organizations, armament for artillery batteries, surrenders, paroles, exchanges and disbandment or mustering out; the first commanding officer and an alphabetical listing of the other field-grade officers; the brigade and higher-level command assignments of the unit; a listing of the battles and campaigns the unit engaged in; and suggested further reading. A bibliography, battle indices, and name indices further enhance this excellent resource.