166th Infantry Regiment (United States)

166th Infantry Regiment
166th Infantry Regiment Coat of Arms
Active	1917–1919, 1940–1945
Country	United States
Allegiance	Ohio
Branch	United States Army
Type	Infantry
Size	Regiment
Motto(s)	"Follow Me"
Engagements	Spanish–American War Puerto Rico Campaign World War I Meuse-Argonne Offensive
Insignia
Distinctive Unit Insignia

Spanish–American War

World War I

The 166th Infantry Regiment was an infantry regiment of the United States Army. It was part of the Ohio National Guard. In 1992, the regiment was consolidated with the 148th Infantry Regiment.

The 166th Infantry Regiment traces its history back to the Mexican–American War. On 23 June 1846, the 2nd Regiment, Ohio Volunteer Infantry was mustered into federal service at Camp Washington. The regiment was organized from companies in south-central Ohio. It mustered out of federal service a year later in New Orleans. It was reorganized and mustered into federal service again on 1 September 1847 at Camp Wool but mustered out on 26 July 1848 at Cincinnati. Between 1855 and 1861, the regiment was reorganized as independent companies in Ohio. In April 1861, it was reorganized at Camp Jackson as the 3rd and 4th Regiments, Ohio Volunteer Infantry. The 3rd was mustered in on 27 April and the 4th on 2 May for a three-month service period. Three year service term regiments with the same numerical designation were mustered in on 5 June for the 3rd and 12 June for the 4th at Camp Dennison. The 3rd Ohio Infantry was mustered out on 23 June 1864 in Cincinnati but the 4th Ohio Infantry was reorganized as the 4th Battalion, Ohio Volunteer Infantry, in June 1864. The 4th Battalion was mustered out on 12 June 1865 in Jeffersonville.

Between 1870 and 1877, the regiment was reorganized as independent companies based in south-central Ohio. During 1876 and 1877, the companies were consolidated as a result of labor unrest and became the 5th, 6th and 14th Infantry Regiments of the Ohio National Guard. On 27 July 1878, the 5th Infantry was consolidated into the 6th and 14th. The 6th and 14th were combined on 14 June 1890 to become the 14th Infantry Regiment. As a result of the outbreak of the Spanish–American War, the 14th Infantry was mustered into federal service on 9 May 1898 at Camp Bushnell as the 4th Ohio Volunteer Infantry. They were soon transferred to Camp George R. Thomas in Chickamauga Park, Georgia. The regiment became part of the Army of the Gulf. On 22 July, it embarked for Newport News and was loaded onto the SS Saint Paul. On 3 August, the regiment landed at Arroyo in Puerto Rico and fought in the Puerto Rican Campaign until the end of hostilities on 13 August. On 29 October, the 4th Ohio embarked on the SS Chester for the voyage back to America. After landing at New York City on 3 November, they were reviewed by President McKinley after being moved to Washington, D.C. The regiment was mustered out at Columbus on 20 January 1899. On 14 April, the regiment was disbanded. It was reorganized as the 4th Infantry Regiment of the Ohio National Guard on 14 July 1899.