The 18th Massachusetts Infantry Regiment was a Union regiment that fought in the American Civil War.

Camp Meigs is a former American Civil War training camp that existed from 1862 to 1865 in Readville, Massachusetts. It was combined from the former Camp Brigham and Camp Massasoit and trained the 54th Regiment Massachusetts Volunteer Infantry, among others. The 54th regiment was one of the first official African-American units in the United States during the Civil War. The former camps were merged into Camp Meigs in August 1862.