The 28th Massachusetts Infantry regiment was the second primarily Irish American volunteer infantry regiment recruited in Massachusetts for service in the American Civil War. The regiment's motto was Faugh a Ballagh
The 5th New York Infantry Regiment, also known as Duryée's Zouaves, was a volunteer infantry regiment that served in the U.S. Army during the American Civil War. Modeled, like other Union and Confederate infantry regiments, on the French Zouaves of Crimean War fame, its tactics and uniforms were different from those of the standard infantry.
The 2nd Vermont Infantry Regiment was a three years' infantry regiment in the Union Army during the American Civil War. It served in the eastern theater, predominantly in the VI Corps, Army of the Potomac, from June 1861 to July 1865. It was a member of the famous Vermont Brigade.
The 18th Massachusetts Infantry Regiment was a Union regiment that fought in the American Civil War.
The 9th Regiment Massachusetts Volunteer Infantry was a military unit from Boston, Massachusetts, USA, part of the Army of the Potomac during the American Civil War. It is also known as "The Fighting Ninth". It existed from 1861 to 1864 and participated in several key battles during the war. The unit is an Irish heritage unit, with many volunteers having been born in Ireland.
The 122nd Ohio Infantry Regiment, sometimes 122nd Ohio Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War.
The 2nd Regiment Massachusetts Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War. Major George H. Gordon, a West Point graduate and veteran of the Mexican–American War, organized the unit's recruitment and formation. The 2nd Massachusetts was trained at Camp Andrew in West Roxbury, Massachusetts on the site of the former Transcendentalist utopian community, Brook Farm. Roughly half the regiment was mustered in on May 18, 1861 and the remainder on May 25, 1861 for a term of three years. The regiment saw extensive combat as part of the Army of the Potomac particularly during the Battle of Antietam and the Battle of Gettysburg.
The 19th Regiment Massachusetts Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 1st Company Massachusetts Sharpshooters was a sharpshooter unit in the Union Army during the American Civil War.
The 16th Massachusetts was an infantry regiment that served in the Union Army during the American Civil War formed of volunteers from the Commonwealth of Massachusetts.
The 17th Massachusetts was an infantry regiment that served in the Union Army during the American Civil War.
The 12th New York Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.
The 3rd Massachusetts Battery, was an artillery battery that served in the Union Army during the American Civil War.
The 39th Massachusetts Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 33rd Massachusetts Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 3rd Massachusetts Volunteer Militia Regiment was a peacetime regiment of infantry that was activated for federal service in the Union Army for two separate tours during the American Civil War. The regiment consisted of companies from Plymouth and Bristol Counties.
The 5th Regiment Massachusetts Volunteer Militia was a peacetime infantry regiment that was activated for federal service in the Union army for three separate tours during the American Civil War. In the years immediately preceding the war and during its first term of service, the regiment consisted primarily of companies from Essex County as well as Boston and Charlestown.
The 6th Regiment Massachusetts Volunteer Militia was a peacetime infantry regiment that was activated for federal service in the Union army for three separate terms during the American Civil War (1861-1865). The regiment gained notoriety as the first unit in the Union Army to suffer fatal casualties in action during the Civil War in the Baltimore Riot and the first militia unit to arrive in Washington D.C., in response to President Abraham Lincoln's initial call for 75,000 troops. Private Luther C. Ladd of the 6th Massachusetts is often referred to as the first Union soldier killed in action during the war.
The 8th Regiment Massachusetts Volunteer Militia was a peacetime regiment of infantry that was activated for federal service in the Union Army for three separate tours during the American Civil War. The regiment consisted almost entirely of companies from Essex County, Massachusetts. The Cushing Guards, established 1775, were Company A based in Newburyport. The Lafayette Guards, created 1825, were Company B from Marblehead. Company C, the Sutton Light Infantry, organized in 1805 as the Marblehead Light Infantry, was also from Marblehead. The Lynn Light Infantry, chartered in 1852 was Company D. Company E was the Beverly Light Infantry, organized in 1814. The second Lynn company was Company F, the City Guards, organized in 1814. The Gloucester unit in the regiment was Company G, the American Guards, first organized in 1788. The third and last Marblehead company was H, the Glover Light Guards, created in 1852 and named in honor of John Glover of the Revolution. The Salem Light Infantry, Company J, had been created in 1805 and in 1859 had taken up Zouave drill and were thence known as the Salem Zouaves. The lone non-Essex company was Company K, the Allen Guards, created in 1806, that came to the regiment from Berkshire County's reorganized old Tenth Militia regiment, and based in Pittsfield.
The 4th Regiment Massachusetts Volunteer Militia, sometimes known as the 4th Massachusetts Infantry, was a peacetime regiment of infantry that was activated for federal service in the Union Army for two separate tours during the American Civil War. Most of the companies were from Norfolk County, Massachusetts. The regiment had its headquarters in Quincy, Massachusetts.
United States of America 
