18th Regiment, Connecticut Infantry

Connecticut in the Civil War

Brief History
The 18th Regiment, Connecticut Infantry was organized at Norwich, New London County, Connecticut and was mustered in on the 22nd day of August, 1862. This regiment was mustered out at Harper's Ferry, Jefferson County, West Virginia June 27, 1865.

For more information about the 18th Regiment Infantry and its history, see:


 * Regimental History - History of the Eighteenth Regiment, Conn. Volunteers in the War for the Union, by William C. Walker at the Salt Lake City, Family History Library

Companies in this Regiment
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. This regiment was composed of men from all parts of Connecticut, but the majority of men in each unit resided in the following counties:

Company A was largely formed by men from New London County.

Company B

Company C

Company D

Company E

Company F was largely formed by men from New London County.

Company G

Company H was largely formed by men from Windham County.

Company I

Company K was largely formed by men from Windham County.

Source Material

 * Catalogue of Connecticut volunteer organizations, with additional enlistments and casualties to July 1, 1864. Compiled From Records in the Adjutant General's Office and Published by Order of the Legislature, by Horace J. Morse - Adjutant General - Online Book
 * Catalogue of Connecticut volunteer organizations: (infantry, cavalry, and artillery,) in the service of the United States, 1861-1865, with additional enlistments, casualties, &amp;c., &amp;c., and brief summaries, showing the operations and service of the several regiments and batteries (1869) by Connecticut. Adjutant-General's Office; Ingersoll, Colin M. (Colin Macrae), 1819-1904 - Online Book
 * The Civil War in the East - Timeline of the 18th Connecticut Infantry Regiment