Union Markers at Antietam

In the 1890's the War Department created a series of over 200 markers to help interpret the battle for visitors to the park. There were 124 Union markers, each telling the story of one of the higher-level commands in the Army of the Potomac. Some have disappeared over the years due to vandalism and accidents, but most are still in place.

Army of the Potomac (Sept. 15)

Army of the Potomac (Sept. 16)

Army of the Potomac (Sept. 17)

Army of the Potomac (Sept. 17 continued)

Army of the Potomac (Sept. 17 continued)

First Army Corps

     Doubleday's Division (Sept. 16)

     Doubleday's Division (Sept. 17)

          Gibbon's Brigade

          Hofmann's Brigade

          Patrick's Brigade

          Patrick's Brigade

          Phelp's Brigade

          Artillery

   Rickett's Division (Sept. 16)

   Rickett's Division (Sept. 17)

          Christian's Brigade

          Duryea's Brigade

          Hartsuff's Brigade

     Meade's Division (Sept. 16)

     Meade's Division (Sept. 17)

          Anderson's Brigade

          Anderson's Brigade

          Magilton's Brigade (Sept. 17 5:30 A.M.)

          Magilton's Brigade (Sept. 17 6:30 A.M.)

          Seymour's Brigade

          Battery C, 5th U.S. Artillery

Second Army Corps (Sept. 15)

Second Army Corps (Sept. 15-16)

Second Army Corps (Sept. 17)

     Sedgwick's Division

          Gorman's Brigade

          Dana's Brigade

          Howard's Brigade

          Battery I, 1st U.S. Artillery 

     French's Division

          Kimball's Brigade

          Morris' Brigade

          Weber's Brigade

     Richardson's Division (Sept. 15-16)

     Richardson's Division (Sept. 17)

          Brooke's Brigade

          Caldwell's Brigade

          Meagher's Brigade

          Batteries A and C, 4th U.S. Artillery

Couch's Division, Fourth Army Corps

Fifth Army Corps

     Humphrey's Division

     Morrel's Division (Sept. 16)

     Morrel's Division (Sept. 17 and 18)

     Sykes Division

          Second and Tenth U.S. Infantry

          Third United States Infantry

          Fourth United States Infantry

          Fourth United States Infantry

          4th U.S. Infantry, Companies G, I and K

          Twelfth United States Infantry

          Fourteenth U.S. Infantry, First Battalion (8 Cos.)

          Fourteenth U.S. Infantry, First Battalion (8 Cos.)

          Fourteenth U.S. Infantry, Second Battalion (8 Cos.)

          Battery E, 1st U.S. Artillery

          Battery K, 5th U.S. Artillery

     Artillery Reserve

          Battery K, 1st U.S. Artillery

          Battery G, 4th U.S. Artillery

Sixth Army Corps

     Slocum's Division

          Battery D, 2nd U.S. Artillery

     Smith's Division

          Brooks' Brigade

          Irwin's Brigade

          Irwin's Brigade

          Battery F, 5th U.S. Artillery

Ninth Army Corps September 15-16

Ninth Army Corps September 17

Ninth Army Corps September 17

     Kanawha Division

          Crook's Brigade

          Ewing's Brigade

     Sturgis' Division

          Ferrero's Brigade

          Ferrero's Brigade

          Nagle's Brigade

          Nagle's Brigade

          Battery E, 4th U.S. Artillery

     Wilcox's Division

          Christ's Brigade

          Welsh's Brigade
          Battery E, 2d U.S. Artillery

     Rodman's Division

          Fairchild's Brigade

          Harland's Brigade

               Eleventh Connecticut Infantry

          Battery A, 5th U.S. Artillery

Twelfth Army Corps

     Williams' Division

          Crawford's Brigade

          Gordon's Brigade

          Gordon's Brigade

     Greene's Division

     Greene's Division

     Greene's Division

          Goodrich's Brigade

          Goodrich's Brigade

          Goodrich's Brigade

          Stainrook's Brigade

          Stainrook's Brigade

          Tyndale's Brigade

          Tyndale's Brigade

Cavalry Division

     First Brigade  

     Second Brigade

     Third Brigade

     Horse Batteries and Reserve Artillery

          Battery A, 2nd U.S. Artillery

          Batteries B and L, 2nd U.S. Artillery

          Battery M, 2nd U.S. Artillery

          Batteries C and G, 3rd U.S. Artillery

A Line of Batteries