Conflict Period:
Civil War (Union) 1
Army 1
Major General 2
02 Apr 1833 2
Lima NY 2
03 Jun 1907 2
Stamford, CT 2

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Personal Details

Full Name:
Thomas Howard Ruger 2
Full Name:
Thomas H Ruger 1
02 Apr 1833 2
Lima NY 2
03 Jun 1907 2
Stamford, CT 2
United States Military Academy Post Cemetery West Point NY 2

Civil War (Union) 1

Army 1
Major General 2
F&S 1
Discharge Rank:
Col 1
Enlistment Rank:
Lieut Col 1
Military Unit:
3rd Infantry 1
Wisconsin 1

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  1. Civil War Service Index - Union - Wisconsin [See image]
  2. Contributed by bruceyrock632


First Division 
Twelfth Army Corps

The monument to the First Division of the Twelfth Army Corps southeast of Gettysburg on Culp's Hill.

The division was commanded at the Battle of Gettysburg by Brigadier General Alpheus Williams, a lawyer and militia officer from Detroit, Michigan.

At the start of the battle Twelfth Corps commander Henry Slocum was given command of the right wing of the army, and when he arrived at Gettysburg on the late evening of July 1st he was senior commander on the field. Alpheus Williams became temporary commander of the Twelfth Corps during this time, with Brigadier Thomas Ruger taking command of the First Division.

Monument map: South Culp's Hill   

From the monument:

Army of the Potomac 
Twelfth Corps
First Brigade 
Brig. General Alpheus S. Williams 
Brig. General Thos. H. Ruger

First Brigade Col. Archibald L. McDougall
Second Brigade Brig. Gen. Henry H. Lockwood
Third Brigade Brig. Gen. Thos. H. Ruger
Col. Silas Colgrove

July 1. Approaching Rock Creek on the Baltimore Pike the Division moved on a cross road to occupy Wolf Hill but retired at sunset and took position east of Rock Creek for the night. The First and Sixth Corps having been included in Gen. Slocum's command Gen. Williams assumed command of the Corps. Gen. Ruger of the First Division and Col. S. Colgrove of the Third Brigade.

July 2. Brig. Gen. Lockwood's Brigade joined the Corps early in the morning not having been assigned to a division was subject to the direct orders of the Corps Commander until assigned July 5th to First Division. The Division at 8 A. M. crossed Rock Creek and formed on the right of Second Division its left on Culp's Hill the right in McAllister's Woods. Breastworks were constructed along the line. Late in the day the Division moved to support Third Corps and Johnson's Confederate Division advanced and occupied the vacant works.

July 3. At daylight attacked the Confederate Infantry and was hotly engaged with charges and countercharges at different points until 10:30 A. M. when the Confederate forces retired.

July 4. Early in the morning Gen. Slocum with a detachment of infantry and a battery made a reconnaissance in front to Gettysburg without opposition.

Casualties Killed 6 Officers 90 Men Wounded 27 Officers 379 Men Captured or Missing 1 Officer 30 Men Total 533

3rd Wisconsin Monument at Gettysburg

                  Union Monuments                   Connecticut   Delaware                   Illinois                   Indiana                   Maine                   Maryland                   Massachusetts                   Michigan                   Minnesota                   New Hampshire                   New Jersey                   New York   Ohio   Pennsylvania   Rhode Island                   Vermont                   West Virginia                   Wisconsin                   U.S. Regulars                                                                                                          Wisconsin                   2nd Infantry                   3rd Infantry                   5th Infantry                   6th Infantry   7th Infantry   26th Infantry   Sharpshooters                 3rd Wisconsin 
Volunteer Infantry Regiment

Attached to the 
3rd Brigade1st Division 
Twelfth Army Corps


The monument to the Third Wisconsin Volunteers is southeast of Gettysburg on Colgrove Avenue south of Spangler's Spring. (39.81251° N, 77.21598° W; map) It was dedicated by the State of Wisconsin on June 30, 1888.


About the monument to the 3rd Wisconsin

The granite monument stands 17' tall and is similar in design to the 5th Wisconsin. Most of the monument is rough hewn, with a section of polished finish above the base which has inscriptions on the front and sides. The five-sided star at the top of the monument is the symbol of the Union Twelfth Army Corps.


The 3rd Wisconsin at the Battle of Gettysburg

The 3rd Wisconsin Infantry was commanded at the Battle of Gettysburg by Colonel William Hawley, a Madison furniture maker and veteran of the Mexican War. It brought 260 men to the field.


The regiment built breastworks at the location of the monument on the morning of July 2nd but in the late afternoon were ordered to reinforce the Union left flank around Little Round Top and left the position. When they returned that night Confederates has occupied the works. The regiment recaptured the position at dawn and held it for the rest of the battle.


Monument map: Spanglers Spring  


From the front of the monument:


3rd. Wis. Vol.

This regiment went into 
position on the part of 
the line on the evening of 
July 1st. On the evening of 
the 2d it moved to the left
to reinforce the 3d Corps
returned to this position 
the same night and remained
until the morning of July 5.
Mustered into U.S. Service
July 27, 1861. 
Mustered out 
July 16, 1865


From the left side:



From the right side:


Civil War Union Major General. The son of an Episcopal minister, he was born in Lima, New York, and at the age of 13, he and his family moved to Janesville, Wisconsin. Entering West Point in 1850, he would graduate 3rd in the class of 1854, however only nine months later he would resign from the Corps of Engineers and returned to Janesville, where he opened his own law office. On June 29, 1861, he reentered the army as executive officer of a volunteer infantry regiment, the 3rd Wisconsin. On September 1st he became the outfit's Colonel. By then he was serving under Major General Nathaniel P. Banks in Virginia's Shenandoah Valley, where early in 1862 the Federals waged a frustrating campaign against Major General Thomas J. "Stonewall" Jackson's Foot Cavalry. He suffered through Major General John Pope's Second Bull Run Campaign, serving conspicuously at Cedar Mountain on August 9, 1862. At Antietam, he led the 3rd Brigade/1st Division/XII Corps/Army of the Potomac, taking a wound while fighting near the West Woods. Once he was back on his feet, he was given a Brigadier General's star and led his brigade at Chancellorsville. There he labored to stem the rout of the XII Corps following Jackson's flank offensive of May 2, 1863. His efforts on this field and others so impressed his immediate superior, Brigadier General Alpheus S. Williams, that at Gettysburg although not his senior subordinate, Williams gave his division to him, when Williams moved up to corps command. (Henry W. Slocum commanded the army's right wing) On July 2, 1863, he justified such faith by his judicious placement of troops along Culp's Hill, ensuring that the next day's attack on the far Federal right would fail. For this action in 1867, he would receive a brevet to Brigadiet General in the regular army. After Gettysburg, he was sent to New York City to help bring order to the Draft Riots. That October his troops were transferred West, where he led his brigade in guarding the supply lines during the Battle of Chattanooga. The division received this duty because Slocum refused to fight under Joe Hooker, and the corps sent only one division into the fight so that Slocum could have his way. He retained brigade command in the merger of the 11th and 12th Corps the following spring. In 1864 he participated in Major General William T. Sherman's Georgia Campaign as a brigade and later a division commander. Accompanying Major General George H. Thomas to Tennessee that fall, he fought gallantly at the battle of Franklin in command of a XXIII Corps division. He was brevetted Major General of Volunteers for his heroics. He was disabled by sickness and missed the Battle of Nashville being replaced by Major General D. N. Couch. With most of the XXIII Corps he was transferred to the North Carolina coast where he served under Major General John M. Schofield, notably at Kinston and during the occupation of Wilmington. He also was able to join Sherman for the surrender of Joe Johnston's army. He continued on duty until being mustered out on September 1, 1866. He became Colonel of the 33rd and later the 18th United States Infantry, these being two of the newly created regular army infantry regiments after the war. He would rise to the rank of Major General and serve as Superintendent of West Point from 1871 to 1876. From 1876 to 1878 he served as commander of the Department of the South. Transferred to the frontier, he served as commander of the District of Montana from 1878 to 1885. Here his two biggest responsibilities were fighting Indians and protecting the railway system to the West Coast. He would retired in 1897. 

Eau Claire Leader, 4 Jun 1907, Tue, Page 1

The New York Times, 4 Jun 1907, Tue, Page 7

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