Overview
The 135th Ohio Infantry (One Hundred Days’ Service) was an infantry regiment from Ohio that served in the Union Army during the American Civil War. Organized at Camp Chase in Columbus, Ohio, the regiment was mustered into federal service on May 11, 1864, for a term of 100 days. It was primarily composed of men from the 5th Ohio National Guard (Licking County) and the 32nd Battalion, Ohio National Guard (Hardin County). The regiment’s service was concentrated in the Middle Department, with duties focused on protecting vital railroad lines and strategic points in Maryland and West Virginia.
Organization & Service
The 135th Ohio Infantry (One Hundred Days’ Service) was organized at Camp Chase and mustered in on May 11, 1864. Under the command of Colonel Andrew Legg, the regiment departed the same day for Cumberland, Maryland, but was soon redirected to Martinsburg, West Virginia. Upon arrival, its companies were distributed along the Baltimore & Ohio Railroad at various points, including Kearneysville, North Mountain, Van Clevesville, and Opequan Station, with regimental headquarters at Martinsburg.
While stationed along the railroad, the companies at North Mountain were surrounded by Confederate forces and, after approximately three hours of fighting, were compelled to surrender. The remainder of the regiment encamped near Maryland Heights until July 6, 1864, after which it moved to John Brown’s school-house, where it was engaged in a skirmish. Subsequently, the regiment was assigned to guard artillery positions on Maryland Heights, remaining on duty there until ordered to return to Ohio. The 135th Ohio Infantry arrived back at Camp Chase on August 28, 1864, and was mustered out of service on September 1, 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
- Guard and patrol duty along the Baltimore & Ohio Railroad (May–July 1864)
- Action at North Mountain (June 1864)
- Skirmish at John Brown’s school-house (July 1864)
- Defense and guard duty at Maryland Heights (July–August 1864)
Casualties
Specific casualty figures for the 135th Ohio Infantry (One Hundred Days’ Service) are not fully detailed in available primary sources. It is known that a portion of the regiment was captured at North Mountain after several hours of fighting. No comprehensive record of killed, wounded, or deaths from disease has been located in the Official Records or state reports.
Some details are incomplete in surviving primary sources.
Field Officers & Commanders
- Colonel Andrew Legg
- Lieutenant Colonel Conduce H. Gatch
- Major David Thomas
Regimental Roster
The complete roster of officers and enlisted men who served in the 135th Ohio Infantry (One Hundred Days’ Service) is available for genealogical and historical research. The roster includes names, ranks, and company assignments as recorded in official state and federal documents.
To view the full roster, please visit the 135th Ohio Infantry (One Hundred Days’ Service) Roster page.
Sources & References
- Official Records of the Union and Confederate Armies, Series I, Vol. 37, Part I–III
- Ohio Roster Commission, “Official Roster of the Soldiers of the State of Ohio in the War of the Rebellion,” Vol. 8
- Dyer, Frederick H., “A Compendium of the War of the Rebellion”
- Federal Publishing Company, “The Union Army,” Vol. 2 (1908)