II Corps (Union Army)

II Corps
Army of the Potomac II Corps badge (trefoil)
Active	1862–1865
Country	United States
Branch	Union Army
Type	Army Corps
Size	Corps
Part of	Army of the Potomac
Motto(s)	"Clubs are trumps"
Engagements	American Civil War
Commanders
Notable commanders	Edwin Vose Sumner Darius N. Couch Winfield Scott Hancock Gouverneur K. Warren Andrew A. Humphreys
Insignia
1st Division
2nd Division
3rd Division

There were five corps in the Union Army designated as II Corps (Second Army Corps) during the American Civil War. These formations were the Army of the Cumberland II Corps commanded by Thomas L. Crittenden from October 24, 1862, to November 5, 1862, later renumbered XXI Corps; the Army of the Mississippi II corps led by William T. Sherman from January 4, 1863, to January 12, 1863, renumbered XV Corps; Army of the Ohio II Corps commanded by Thomas L. Crittenden from September 29, 1862, to October 24, 1862, transferred to Army of the Cumberland; Army of Virginia II Corps led by Nathaniel P. Banks from June 26, 1862, to September 4, 1862, and Alpheus S. Williams from September 4, 1862, to September 12, 1862, renumbered XII Corps; and the Army of the Potomac II Corps from March 13, 1862, to June 28, 1865.

Of these five, the one most widely known was the Army of the Potomac formation, the subject of this article.