On July 31, 1864, Grant decided to have Sheridan be his field commander to fight Confederate
Lieutenant General Jubal Early in the Shenandoah Valley. On August 1, Sheridan was relieved of command from the Army of the Potomac, "but not from command of the cavalry as a corps organization." To satisfy the Lincoln administration's concern about Sheridan's young age, Grant intended to have Major General
David Hunter be the head of an army that was the consolidation of four military districts, but have Sheridan be the leader in the field. On August 5, Grant ordered Hunter to "Concentrate all your available force without delay in the vicinity of Harper's Ferry....", and sent him more cavalrymen. Hunter asked to be relieved entirely, and his request was granted—putting Sheridan in command of the new army. The 18th Pennsylvania Cavalry arrived at Harper's Ferry on August 12. The regiment patrolled and skirmished on both sides of the Potomac River—including
Charlestown,
Bolivar Heights, and
Shepherdstown in West Virginia;
Berryville in Virginia; and Boonsboro and
Sharpsburg in Maryland. Sheridan's army began with Wright's VI Corps and three cavalry divisions. The 18th Pennsylvania remained in the same chain of command, as part of McIntosh's First Brigade in Wilson's 3rd Division, and remained under Brinton's command.
Third Battle of Winchester The
Third Battle of Winchester, also known as the Battle of Opequon, is considered by some historians to be the most important American Civil War battle in the Shenandoah Valley. A total of 54,000 men from both sides participated in this Union victory on September 19. Against Early's Army of the Valley, Sheridan had two divisions of cavalry, two infantry corps under Wright and Brigadier General
William H. Emory (
XIX Corps), and the Army of West Virginia, consisting of both infantry and cavalry, led by Brigadier General
George Crook. Casualties for both sides totaled to over 8,600. The 18th Pennsylvania and 2nd Ohio Cavalries led the rest of the brigade across and joined the two New York regiments. Enemy pickets fled through a second group of pickets that belonged to the
23rd North Carolina Infantry Regiment. Three more North Carolina Confederate infantry regiments, the
5th,
20th, and
12th, held off the New Yorkers and caused them to retreat. McIntosh responded with artillery and an attack by the 18th Pennsylvania. The 18th Pennsylvania made mounted attacks on infantry breastworks. With Brinton gone, Phillips, commander of the Second Battalion, became the regiment's commander. Later in the day, McIntosh was seriously wounded leading a dismounted charge. His wound required amputation of his leg below the knee, and Lieutenant Colonel George A. Purington replaced him. Casualties for the regiment were seven men killed and 12 wounded, plus one officer captured.
Tom's Brook On October 3, Custer took command of the 3rd Cavalry Division. The division continued destroying crops, barns, and mills in the valley as it moved north, which depleted the food and infrastructure used to supply the Confederate Army. During this time, the division was followed and harassed by Confederate cavalry. On October 9, the First Brigade (now led by Colonel
Alexander Pennington) took the advance in
an attack against enemy cavalry. At first met with "stubborn resistance", Custer sent the 18th Pennsylvania supported by two other regiments to turn the enemy's flank. On Custer's command, all regiments charged—resulting in the capture of all enemy artillery, wagons, and ambulances while the enemy fled. One soldier wrote "I never saw such a complete rout in my life." Custer reported "Never since the opening of this war had there been witnessed such a complete and decisive overthrow of the enemy's cavalry" and that a pursuit was made "vigorously for nearly twenty miles."
Battle of Cedar Creek The
Battle of Cedar Creek was fought on October 19, 1864. In this Union victory, Early's Confederate force surprised the Union Army at
Cedar Creek, Virginia, and appeared to be destined for a victory until Sheridan arrived and rallied his troops. The 18th Pennsylvania Cavalry was assigned the task of supporting a battery that was exchanging fire with enemy artillery, and suffered some casualties when a shell burst directly over the regiment. On November 12, the regiment was involved in a skirmish at Cedar Creek. Enemy cavalry drove in Union pickets early in the morning and attacked near the Union camp. Pennington's First Brigade was sent to fight the attackers. Although the enemy soldiers were driven off, the 18th Pennsylvania Cavalry became cut off from the brigade. Philips was commanding the regiment at the time, and Confederate cavalry under the command of Rosser captured him and 164 others. Phillips and Lieutenant Henry J. Blough were sent to Libby Prison in Richmond. Private Nathan Monz (CompanyD) and Private John L. Stall (CompanyE) were killed—the last two soldiers in the regiment to be killed in action. Pennington
censured the regiment for its conduct in this action. The regiment was censured again and described as setting "a very bad example to the brigade" for its action near
Mount Jackson on November 22, when it left rear guard duty and "was not to be found until after the brigade was relieved from duty".
Winter camp For the next few weeks, the regiment camped near Winchester and performed picket duty and scouting tasks. A portion of the regiment went to Cedar Creek Valley to hunt
bushwhackers. Darlington and Van Voorhis had now mustered out, and Phillips was in a Confederate prison. Captain William H. Page of CompanyL was promoted to major with an effective date of December 1, and twice-wounded Britton of CompanyF was promoted to major effective December 3. Brinton mustered out January 13, 1865. Sheridan had two divisions of cavalry and planned to join Grant near Richmond. The plan changed on March 2 when Sheridan's army approached
Waynesboro, Virginia and found Early's Army of the Shenandoah. Custer's division did the fighting, and most of Early's army was killed or captured. All of Early's headquarters equipment and artillery were captured although Early himself evaded capture. The 18th Pennsylvania Cavalry's Third Battalion, commanded by Captain George W. Nieman, and the 5th New York Cavalry, were held in reserve in this battle. After the battle, the battalion was part of a force that escorted about 1,600 prisoners north to Winchester. On March 7 during the trip north, Rosser's cavalry attacked the Union force at
Rude's Hill near Mount Jackson.{{#tag:ref|Boudrye spells Rude's Hill as "Rood's Hill". The historian for the 18th Pennsylvania Cavalry spells it as "Rondes Hill". Pond wrote that the attack was "near Mount Jackson". A map at the Library of Congress uses the "Rude's Hill" spelling.{{cite web ==Conclusion==