The Early Indicators project created three primary data sets: Military, Disease, and Census. The Military data set is a collection of wartime records (Regimental Record, Compiled Military Service Record, and Carded Medical Records) and post-war pension records.
The Regimental Record (RR) was collected from the Regimental Descriptive Books in RG 94, Records of the Adjutant General's Office, 1780s-1917, at the National Archives and Records Administration (NARA) in Washington, D.C. Within the regimental books, the Company Descriptive Book contains a list of all recruits mustered in to service. This includes commissioned officers, non-commissioned officers, and all recruits. The information extracted is as follows:
- age at enlistment
- physical description (hair, eyes, complexion)
- enlistment and muster information (date, place, term of service, enlistment officer)
- remarks (can include desertions, furloughs, deaths, reenlistments)