103rd Infantry Regiment (United States)

103rd Infantry Regiment (2nd Maine)
Coat of arms
Active	1861–1863, 1916–1945.
Country	United States
Allegiance	New England; Maine, New Hampshire, Vermont, Massachusetts, and Rhode Island.
Branch	Army National Guard
Type	Infantry
Motto(s)	To the Last Man
Colors	Blue, gold, and white.
Engagements	American Civil War First Battle of Bull Run Peninsula Campaign Battle of 2nd Bull Run Battle of Antietam Battle of Fredericksburg Battle of Chancellorsville World War I Champagne-Marne Aisne-Marne Battle of Saint-Mihiel Meuse-Argonne Offensive World War II Battle of Guadalcanal New Georgia Campaign New Guinea Luzon
Commanders
Notable commanders	Charles Davis Jameson, Charles W. Roberts

U.S. Infantry Regiments
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102nd Infantry Regiment	104th Infantry Regiment

American Civil War

World War I

World War II

The 103rd Infantry Regiment was an infantry regiment of the United States Army that served in combat in the American Civil War, World War I, and World War II. It was an Army National Guard regiment from the states making up New England, but most of its soldiers came from Maine. It was a part of the 26th Infantry Division and the 43rd Infantry Division. The 103rd regiment fought in numerous battles before its deactivation after the Second World War.

The 103rd Infantry Regiment was originally formed in 1861 as the 2nd Maine Volunteer Infantry Regiment. It served in the Union Army and was one of the first US regiments to see combat against the Confederates. It served in the First Battle of Bull Run, which was the first major battle of the Civil War and a decisive Union defeat. However, the 2nd Maine was one of the last regiments to retreat from the field. It served in the Peninsula Campaign and the Second Battle of Bull Run, both were also Union defeats. At the Battle of Antietam on 17 September 1862, the 2nd Maine experienced its first victory, but this was to be short lived. At the later Battle of Fredericksburg, the 2nd Maine would suffer its highest casualties of the war. The regiment was also present for the Union defeat at the Battle of Chancellorsville, and were mustered out of service one month later. Most of the soldiers had enlisted for two years, but those who'd enlisted for three were sent to the 20th Maine Volunteer Infantry Regiment to finish their wartime service.

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