Pennsylvania Reserves
Commander Date Official Designation Major Battles
George A. McCall 3 Oct 1861-13 Mar 1862 McCall 's Div , Army of the Potomac
George A. McCall 13 Mar-12 June 1862 2nd Division , I Corps
George A. McCall 18-30 June 1862 3rd Division , V Corps Mechanicsville , Gaines Mill , Glendale
Truman Seymour 30 June-26 Aug 1862 3rd Division , V Corps Malvern Hill
John F. Reynolds 26 Aug-12 Sept 1862 3rd Division , III Corps ( Army of VA ) Second Bull Run
George G. Meade 12-17 Sept 1862 3rd Division , I Corps South Mountain , Antietam
Truman Seymour 17-29 Sept 1862 3rd Division , I Corps Antietam
George G. Meade 29 Sept-25 Dec 1862 3rd Division , I Corps Fredericksburg
Horatio G. Sickel 25 Dec 1862-1 June 1863 Pennsylvania Reserves , XXII Corps
Samuel W. Crawford 1-28 June 1863 Pennsylvania Reserves , XXII Corps
Samuel W. Crawford 28 June-28 Aug 1863 3rd Division , V Corps Gettysburg
William McCandless 28 Aug-1 Nov 1863 3rd Division , V Corps
Samuel W. Crawford 1 Nov 1863-20 Feb 1864 3rd Division , V Corps
William McCandless 20 Feb-1 May 1864 3rd Division , V Corps
Samuel W. Crawford 1 May-2 June 1864 3rd Division , V Corps Wilderness , Spotsylvania , Totopotomoy Creek
Command history
The first commander was George A. McCall , and later division commanders were John F. Reynolds , George G. Meade , and Samuel W. Crawford . Truman Seymour twice was acting commander , once on the Peninsula and once at Antietam , when Meade became acting commander of I Corps . The initial brigade commanders were Reynolds , Meade , and Colonel John S. McCalmont ( until Edward Otho Cresap Ord took official command of the 3rd Brigade ) .
The Pennsylvania Reserves were an infantry division in the Union Army during the American Civil War. Noted for its famous commanders and high casualties, it served in the Eastern Theater, and fought in many important battles, including Antietam and Gettysburg.