Twelfth Corps

Twelfth Corps (HM8WH)

Location: Gettysburg, PA 17325 Adams County
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Country: United States of America
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N 39° 48.983', W 77° 13.134'

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Army of the Potomac

Army of the Potomac
Twelfth Corps

Major General Henry W. Slocum
Brigadier General Alpheus S. Williams
First Division Brigadier General Alpheus Williams,
Brigadier General Thomas H. Ruger
Second Division Brigadier General John W. Geary
Artillery Brigade Lieutenant Edward D. Muhlenberg
Provost Guard Tenth Maine (Four Companies)

July 1 Marched from near Littlestown to Two Taverns. In the afternoon hearing the 1st and 11th Corps were engaged at Gettysburg the Corps advanced on the Baltimore Pike. Williams's Division to a position east of Rock Creek. Geary's Division to the left of Union Line extending to the summit of Little Round Top.

July 2 In the morning the Corps took position on the right of 1st Corps on a line extending from the top of Culp's Hill southeasterly across the low meadow into McAllister's Woods. Later in the day the Corps except Greene's Brigade was withdrawn to support the left of the Army. Johnson's Confederate Division at night advanced under cover of darkness and took possession of the works on the Corps line on right of Greene's Brigade. About midnight the Corps returned and finding Johnson's Division in possession of their works formed line in front of that Division.

July 3 Before 1 a.m. the Artillery of the Corps and Rigby's Maryland Battery from Reserve Artillery in all 26 guns were so placed as to command the line occupied by Johnson's Division and at daylight opened fire under cover of which the infantry was advanced and attacked the Confederate position and after a contest lasting seven hours recaptured the works. Many prisoners and over 5,000 small arms were captured. In the afternoon the Corps was in readiness to move.

July 4 Gen. Slocum in the morning advanced with a detachment of Ruger's Division and a battery and found that the Confederates in front had retired.

Casualties Killed 18 Officers 186 Men. Wounded 43 Officers 769 Men. Captured or Missing 2 Officers 64 Men. Total 1082.
HM NumberHM8WH
Year Placed1906
Placed ByGettysburg National Military Park Commission
Marker ConditionNo reports yet
Date Added Saturday, October 4th, 2014 at 4:46am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)18S E 310080 N 4409733
Decimal Degrees39.81638333, -77.21890000
Degrees and Decimal MinutesN 39° 48.983', W 77° 13.134'
Degrees, Minutes and Seconds39° 48' 58.98" N, 77° 13' 8.04" W
Driving DirectionsGoogle Maps
Area Code(s)717
Closest Postal AddressAt or near 401-409 Slocum Ave, Gettysburg PA 17325, US
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