Col. Wynkoop entered the service, April 19, 1861, as Captain of the Ashland Dragoons, to be employed as a rifle company. He was appointed Major of the Sixth Regiment, Penn. Vols. Infantry, April 21, 1861. In that capacity he served through Maryland and Virginia, with Gen. Patterson, in the three months' campaign, until August 1st. He reentered the service, and was appointed Major of the 3d Penna. Cavalry, (then Young's Kentucky Regiment of Light Cavalry) August 7, 1861. He served through Southern Maryland with his Battalion, it being attached to the commands of Brigadier-Generals Sickles and Hooker, who campaigned along the Patuxent and Potomac. He was transferred in October, 1861, from the 3d to the 7th Pennsylvania Cavalry, of which he became Junior Major, his commission bearing date, Oct. 14th. He served through the South-West with Buell, Rosecranz, Thomas and Stanley, from the taking of Nashville to the Battle of Stone River or Murfreesboro, winning praise from his superior officers for his gallantry in action, and for the skillful manner in which in every instance he manœuvered his command. "Rosecranz's Campaign with the Fourteenth Army Corps, or the Army of the Cumberland," published in Cincinnati

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in 1863, repeatedly mentions the Major and the gallant Seventh, in the highest terms. In February, 1863, Major Wynkoop was ordered to Pennsylvania, with a permanent party, consisting of Lieutenant Heber Thompson, Co. F, Lieut. Jones, Co. A, Sergt.-Major Dennings and Sergt. Kelley, to recruit for his Regiment. The following June, upon the invasion of Pennsylvania by Lee, he was ordered by the War Department to report to Gen. Couch. then commanding the Department of the Susquehanna. Upon reporting Gen. Couch appointed him Chief of Cavalry in his Department. He had command of all the cavalry of the Department during the Battle of Gettysburg and the retreat of Lee into Virginia. On the 7th of August, 1863, he was appointed Colonel of the 20th Pennsylvania Cavalry, and reported with his command to Gen. Kelly, commanding the Department of West Virginia. He served through that section, having several successful skirmishes with Imboden, Mosby, McNeal, end other leaders of guerilla bands then infesting the country. Col. Wynkoop reorganized the 20th Penna. Cavalry, in January, 1864, and reported in March to Gen. Sigel, at Cumberland, Md. He was placed in command of the 1st Cavalry Brigade, 1st Division. On the 1st of April, 1864, he with his command, went with Gen. Sigel, into the Shenandoah Valley. In the beginning of May he fought part of Breckinridge's command near Mt. Jackson, and drove it several miles, killing and capturing many of the rebels. Breckinridge was reinforced and offered battle to Gen. Sigel. The latter was compelled to fall back to Woodstock, Va., Breckinridge's force being too strong. In a few days afterwards Gen. Sigel was relieved, and Major-General Hunter assumed command. Col. Wynkoop served with Hunter from Woodstock to Lynchburg, participating with his Brigade, in all of the battles fought during that campaign. At Piedmont, with three hundred men of his Brigade, he charged the rebel line of infantry, capturing seven hundred and sixty rank and file; forty-six line and field officers, and three Brigade-Commanders. Subsequently he defeated Imboden's command at Tie River Gap, capturing forty men and three commissioned officers. Col. Wynkoop formed with his Brigade, the rear-guard in the retreat from Lynchburg, fighting constantly for seven days and nights. When Col. Wynkoop left Cumberland early in April, to enter upon this campaign in the Shenandoah Valley, his Brigade numbered twenty-two hundred and sixty men. When he returned in the following July after the retreat of Hunter, his command was reduced to about eight hundred men. In crossing the Big Suel Mountain be lost three hundred men and horses. After the return Col. Wynkoop was ordered to Cumberland, Md., to reorganize the Brigade; to remount, arm and equip the men. Col. Wynkoop was in command of the Brigade eleven months altogether, which completed his service in the Army.

John E Wynkoop