Overview
The 164th Ohio Infantry (One Hundred Days’ Service) was an infantry regiment organized in Ohio for Union service during the American Civil War. Mustered at Camp Cleveland on May 11, 1864, the regiment was composed primarily of men from the 49th Regiment, Ohio National Guard (Seneca County) and the 54th Battalion (Summit County). The unit served for a term of 100 days, operating chiefly in the defenses of Washington, D.C.
The 164th Ohio Infantry was part of the broader mobilization of Ohio National Guard units in the spring of 1864, intended to provide short-term garrison duty and free veteran troops for active campaigning in the Eastern Theater.
Organization & Service
The regiment was officially organized at Camp Cleveland, Ohio, on May 11, 1864, under the command of Colonel John C. Lee. The unit consisted of National Guard companies drawn from Seneca and Summit counties. After organization, the regiment departed Cleveland on May 14, traveling through Dunkirk, Elmira, Harrisburg, and Baltimore, and arrived in Washington, D.C., on May 17, 1864.
Upon arrival, the 164th Ohio Infantry was assigned to the defenses south of the Potomac River. The regiment was stationed at several forts, including Fort Smith, Fort Strong, Fort Bennett, and Fort Haggarty, as well as other nearby fortifications. Its primary duties involved garrisoning these positions, maintaining readiness, and supporting the defense of the capital during the height of the 1864 campaign season. The regiment completed its 100 days of service and returned to Cleveland, where it was mustered out on August 27, 1864.
Research This Regiment Further
If you’d like to explore this unit’s history in more depth, regimental histories and Civil War reference works offer valuable detail.
Engagements & Campaigns
- Garrison duty in the Defenses of Washington, D.C., south of the Potomac (May–August 1864)
- Stationed at Fort Smith, Fort Strong, Fort Bennett, Fort Haggarty, and other fortifications
Casualties
Specific casualty figures for the 164th Ohio Infantry (One Hundred Days’ Service) are not detailed in the primary sources. The regiment primarily performed garrison duty and did not participate in major combat operations during its term of service.
Field Officers & Commanders
- Colonel John C. Lee
- Lieutenant Colonel Augustus S. Bement
- Major Michael Sullivan
Regimental Roster
The full roster of the 164th Ohio Infantry (One Hundred Days’ Service), including company assignments and individual soldier details, is available on the regiment’s roster page. Researchers and descendants can consult this roster for genealogical and historical information.
Visit the 164th Ohio Infantry (One Hundred Days’ Service) Roster for a complete listing of officers and enlisted men.
Sources & References
- Official Records of the Union and Confederate Armies, Series I, Vol. XXXVII
- Ohio Roster Commission, “Official Roster of the Soldiers of the State of Ohio in the War of the Rebellion”
- Dyer, Frederick H., “A Compendium of the War of the Rebellion”
- “The Union Army,” Vol. 2, Federal Publishing Company, 1908