Company Organization*

• Organized at Philadelphia August 23 to November 6, 1861.
†The regiment was organized at Camp Ballier, Philadelphia, under the command of Colonel John F. Ballier, Lieutenant Colonel Adolph Mehler and Major George Wynkoop. Colonel Ballier had commanded the 21st Pennsylvania Infantry, a three months service regiment, and many men from the 21st reenlisted in the 98th. Many of the regiment were German immigrants and had military experience in Europe.

• Regiment moved to Washington, DC, September 30, 1861.
†Eight companies moved to Washington, D.C. Attached to Peck’s Brigade, Couch’s Division, Army of the Potomac for duty in the Defenses of Washington, DC

• Companies “G” and “H” joined in December, 1861.

• Attached to Peck’s Brigade, Couch’s Division, Army Potomac, to March, 1862.

• 3rd Brigade, 1st Division, 4th Army Corps, Army Potomac, to July, 1862.

• 2nd Brigade, 1st Division, 4th Army Corps, to September, 1862.

• 2nd Brigade, 3rd Division, 6th Army Corps, Army Potomac, to October, 1862.

• 3rd Brigade, 3rd Division, 6th Army Corps, to January, 1864.

• Wheaton’s Brigade, Dept. West Virginia, to March, 1864.

• 1st Brigade, 2nd Division, 6th Army Corps, Army of the Potomac, and Army of the Shenandoah, to June, 1865.