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World War I: Genealogy: Armies, Regiments, Units, etc.

Resources for history and genealogy

Unit and Organizational Records

If you know a veteran’s regiment and the combat division it was attached to, you may find descriptions of the unit's activities.

Some of these specialized records are only available on-site at the appropriate research facility.


Unit Histories

Shoulder insignia or patch. Third Division. Military Rootsweb. The white stripes represent the Division's 3 major operations: Marne, St. Mihiel, and Meuse-Argonne


Newspaper Articles: Searching in NYT Historical Database

Useful searches include:

Casualty lists, Army Orders, names of divisions, squadrons or units, names of battles, names of people. Look for persons with first names first and the reverse.


  • 147th aero squadron
  • "quick t.c."
  • William J. Sargeant
  • Army Orders AND camp benning

Article on 147th aero squadron.

Major Sources

History of the 147th Aero Squadron, from Gorrell's History of the American Expeditionary Forces Air Service, 1917-1919. National Archives microfilm M990

Genealogy Resources at the University of Delaware Library

Family tree

Although not aimed at genealogy and family history, the collections of the University of Delaware Library (Morris Library) include materials useful to genealogists and family historians.

This Genealogy Research Guide is provided as a service for genealogists. It presents topics and resources to assist researchers.

The UD Library does not specialize in genealogy and does not have staff responsible for genealogy. Library staff cannot conduct research.

For questions about library resources and holdings, use the Ask the Library service.

For questions about getting research assistance, see the suggestions on the home page of this guide or on the topic/resources pages.