Dates: 1-3 July, 1863
Confederate Commander: Gen. Robert E. Lee
CSA Forces: ~72,000
I Corps - LTG James Longstreet
II Corps - LTG Richard Ewell
III Corps - LTG A.P. Hill
Cavalry - MG J.E.B. Stuart

Union Commamder: MG George G. Meade
USA Forces: ~94,000
I Corps - MG John F. Reynolds
II Corps - MG Winfield S. Hancock
III Corps - MG Daniel Sickles
V Corps - MG George Sykes
VI Corps - MG John Sedgwick
XI Corps - MG Oliver O. Howard
XII Corps - MG Henry w. Slocum
Cavalry - MG Alfred Pleasanton

LTG= Lieutenant General
MG= Major General

The Battle of Gettysburg was fought on three days (1st-3rd) in July, 1863. This was General Robert E. Lee's second attempt to invade the North (The first attempt was halted at Antietam in September, 1862). The Gettysburg campaign followed Lee's most famous victory at Chancellorsville, VA (May, 1863 ) over Major General Joseph Hooker.

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Gettysburg is a small town in south central Pennsylvania, located less than ten miles from the Maryland border.

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The battle developed as a meeting engagement between the Union Army and the Confederate Army. Neither commander had planned to fight there. The battle basically can be divided up not only by days but also geographically. The first day's fighting took place mostly north and west of the town. The second day's fighting took place mainly on the far southern part of the Union Army's positions. The third day's fighting took place in the middle of the Union position.