Notice: Our website is currently undergoing a migration, and some content may have been moved to a new location, be actively migrated, or be temporarily inaccessible. We appreciate your patience as we continue to add content gradually over time.
Cover of Force Structure and Unit History Branch brochure
Using History for a Better Force Structure

Force Structure and Unit History Branch

Our primary mission is to provide force structure and historical support to military planners, doctrinal developers, and force accounting personnel on the Headquarters, Department of the Army (HQDA) staff and at the major Army commands.

This site offers products from the Branch's two major programs:

Force Structure Support

  • Select TOE units for activation/retention, and release Historic Unit Identification Codes
  • Determine official Army unit designations
  • Maintain the official rolls of the Army Document unit status changes and update HQDA databases
  • Maintain historical information on Army Structure
  • Issue directives on behalf of the Secretary of the Army authorizing changes in the status of units
  • Assist Army TOE and force developers

Organizational History

  • Provide unit historical reference support on Army TOE units to the Army Staff, White House, Congress and other Federal Agencies
  • Determine the Lineage and Honors for active TOE Army units
  • Certify unit entitlements to organizational property, awards and campaign streamers
  • Provide input for HQDA review of recommendations for unit awards and campaign participation credit
  • Approve requests for official recognition of unit days and Special Designations

The functions of these two programs overlap in the preparation and publication of the: Army Lineage Series

How CMH assists with Unit History Programs. [PDF - 4.6MB]

Cookie Disclaimer - CMH Online does not use persistent cookies (persistent tokens that pass information back and forth from the client machine to the server). CMH Online may use session cookies (tokens that remain active only until you close your browser) in order to make the site easier to use. CMH Online DOES NOT keep a database of information obtained from these cookies. You can choose not to accept these cookies and still use the site, but it may take you longer to fill out the same information repeatedly and clicking on the banners may not take you to the correct link. Refer to the help information in your browser software for instructions on how to disable cookies.

External Links Disclaimer - The appearance of hyperlinks to external sites does not constitute endorsement by the Department of the Army of the linked web site or the information, products or services contained therein. For other than authorized activities such as military exchanges and Morale, Welfare and Recreation sites, the Department of the U.S. Army does not exercise any editorial control over the information you may find at these locations. Such links are provided consistent with the stated purpose of this web site.

Migration Notice - The Center for Military History has recently completed the initial migration process to a new content management system (CMS). Please note that not all content has been migrated over yet, but it will be gradually transferred over time. If you are unable to find specific content, feel free to send us an inquiry, and our team would be happy to assist you in locating the information you need.

Inquiries - For inquiries related to organizational history, military programs, or research at the U.S. Army Center of Military History (CMH), please email CMH Answers at usarmy.mcnair.cmh.mbx.answers@army.mil. Due to high correspondence volume, response times may vary. Before reaching out, review the Army Records Master List, FAQs, and Online Bookshelves. On-site research appointments require one week’s notice. For more information, please visit the CMH website at https://history.army.mil/About-CMH/Inquiries-and-Visitor-Policy/.