A little history on Gettysburg before we go

From the Wikipedia article:


The Battle of Gettysburg (July 1 – July 3, 1863), fought in, and around the town of Gettysburg, Pennsylvania, as part of the Gettysburg Campaign, was the battle with the largest number of casualties in the American Civil War and is frequently cited as the war's turning point. Union Maj. Gen. George Gordon Meade's Army of the Potomac defeated attacks by Confederate General Robert E. Lee's Army of Northern Virginia, ending Lee's invasion of the North.

The two armies had suffered between 46,000 and 51,000 casualties. Union casualties were 23,055 (3,155 killed, 14,531 wounded, 5,369 captured or missing). Confederate casualties are more difficult to estimate. Many authors cite about 28,000 overall casualties, but Busey and Martin's definitive 2005 work, Regimental Strengths and Losses, documents 23,231 (4,708 killed, 12,693 wounded, 5,830 captured or missing).