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“Bite-Size Bits of Local, National, and Global History”
Near Sharpsburg in Washington County, Maryland — The American Northeast (Mid-Atlantic)
 

Twelfth Army Corps

 
 
Twelfth Army Corps Marker image. Click for full size.
By Craig Swain, February 9, 2008
1. Twelfth Army Corps Marker
Inscription.
U.S.A.
Twelfth Army Corps

Maj. Gen. Jos. K. F. Mansfield, Commanding.
September 17, 1862.

The Twelfth Corps left its bivouac on the Line and Hoffman Farms at daylight, moved forward in column of battalions in mass and deployed in support of the First Corps, William's Division on the right and Greene's Division on the left. Its line extended from D.R. Miller's House on the Hagerstown Pike, in a southeasterly direction to and across the Smoketown Road. While the deployment was in progress, Maj. Gen. Mansfield was mortally wounded and carried from the field.

He was succeeded by Brig. Gen. A.S. Williams. This corps supported then relieved the First Corps.

Later in the day it formed in support of the First and Sixth Corps of the Army of the Potomac.
 
Erected by Antietam Battlefield Board. (Marker Number 27.)
 
Marker series. This marker is included in the Antietam Campaign War Department Markers marker series.
 
Location. 39° 29.064′ N, 77° 44.57′ W. Marker is near Sharpsburg, Maryland, in Washington County. Marker is at the intersection of Mansfield Avenue and Smoketown Road, on the left when traveling east on Mansfield Avenue. Touch for map.
Twelfth Army Corps Marker image. Click for full size.
By Brian Scott, September 19, 2015
2. Twelfth Army Corps Marker
Located at a "dogleg" of Mansfield Avenue before the intersection with the Smoketown Road. Marker is in this post office area: Sharpsburg MD 21782, United States of America.
 
Other nearby markers. At least 10 other markers are within walking distance of this marker. William's Division, Twelfth Army Corps ( here, next to this marker); 12th Pennsylvania Cavalry ( a few steps from this marker); a different marker also named Twelfth Army Corps ( a few steps from this marker); First Army Corps ( about 300 feet away, measured in a direct line); a different marker also named First Army Corps ( about 400 feet away); Greene's Division, Twelfth Army Corps. ( about 400 feet away); a different marker also named Twelfth Army Corps ( about 400 feet away); a different marker also named Twelfth Army Corps ( about 400 feet away); Mansfield ( about 500 feet away); Major General Joseph K. F. Mansfield ( about 700 feet away). Touch for a list and map of all markers in Sharpsburg.
 
Regarding Twelfth Army Corps. This marker is included on the East Woods Virtual Tour by Markers see the Virtual tour link below to see the markers in sequence.
 
Also see . . .
1. Antietam Battlefield. National Park Service site. (Submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia.)
Three War Department Tablets Flank the 12th Pennslyvania Cavalry Monument image. Click for full size.
By Craig Swain, February 9, 2008
3. Three War Department Tablets Flank the 12th Pennslyvania Cavalry Monument
 

2. XII Corps, Army of the Potomac. Mansfield graduated in the West Point class of 1822, and had previously served in the Mexican-American War. He had only been appointed Corps commander on September 14th. The would be Mansfield's one and only field command of his long career. (Submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia.) 

3. East Woods Virtual Tour by Markers. A collection of markers interpreting the action of during the Battle of Antietam around the East Woods. (Submitted on March 8, 2008, by Craig Swain of Leesburg, Virginia.) 

4. Joseph K. Mansfield. Joseph King Fenno Mansfield (December 22, 1803 – September 18, 1862) was a career United States Army officer, civil engineer, and a Union general in the American Civil War, mortally wounded at the Battle of Antietam. (Submitted on October 26, 2015, by Brian Scott of Anderson, South Carolina.) 
 
Categories. War, US Civil
 
Twelfth Army Corps Marker (Left) image. Click for full size.
By Brian Scott, September 19, 2015
4. Twelfth Army Corps Marker (Left)
Major General Joseph K.F. Mansfield (1803-1862) image. Click for full size.
By Brian Scott
5. Major General Joseph K.F. Mansfield (1803-1862)
His horse was hit and a bullet caught him squarely in the right chest. Writes Dr. Patrick Henry Flood, Surgeon, 107th NY Regiment, in a letter to his widow, "I found the clothing around his chest saturated with blood, and upon opening them, found he was wounded in the right breast, the ball penetrating about two inches from the nipple, and passing out the back, near the edge of the shoulder blade."
Looking North Down the Smoketown Road image. Click for full size.
By Craig Swain, February 9, 2008
6. Looking North Down the Smoketown Road
Mansfield's XII Corps advanced from this direction into the East Woods to fall on line behind Ricketts' Division of the I Corps.
 
 
Credits. This page was last revised on June 16, 2016. This page originally submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia. This page has been viewed 596 times since then and 31 times this year. Photos:   1. submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia.   2. submitted on October 26, 2015, by Brian Scott of Anderson, South Carolina.   3. submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia.   4, 5. submitted on October 26, 2015, by Brian Scott of Anderson, South Carolina.   6. submitted on March 3, 2008, by Craig Swain of Leesburg, Virginia.
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