2nd Wisconsin Infantry Regiment

2nd Wisconsin Infantry Regiment
Flag of Wisconsin
Active	June 11, 1861 – July 2, 1864
Country	United States
Allegiance	Union
Branch	Infantry
Size	Regiment
Engagements	American Civil War Manassas campaign Battle of Blackburn's Ford First Battle of Bull Run Northern Virginia campaign First Battle of Rappahannock Station Second Battle of Bull Run Maryland campaign Battle of South Mountain Battle of Antietam Battle of Fredericksburg Battle of Chancellorsville Battle of Gettysburg Bristoe campaign Mine Run campaign Overland Campaign Battle of the Wilderness Battle of Spotsylvania Court House Battle of North Anna Battle of Cold Harbor
Commanders
Colonel	S. Park Coon
Colonel	Edgar O'Connor
Colonel	Lucius Fairchild
Colonel	John Mansfield
Insignia
I Corps badge (1st Division)

The 2nd Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It spent most of the war as a member of the famous Iron Brigade of the Army of the Potomac. It suffered the largest number of casualties as a percentage of its total enlistment of any Union Army unit in the war.^[1]: 65