Who Fought in the Battle of Gettysburg?
The Confederate Army of Northern Virginia
70,100 men and 280 guns commanded by General Robert E. Lee
The armies at the Battle of Gettysburg included regiments and batteries from 12 Southern and 18 Northern states. See the States at Gettysburg.
The Federal Army of the Potomac had an advantage in numbers of almost 24,000 men, helped by a last-minute transfer of over 10,000 men from the rear-area forces around Washington and Baltimore.
See a comparison of the strength of the corps and divisions
of the armies at Gettysburg
How many casualties were there in the Battle of Gettysburg?
How many people died at Gettysburg?
Gettysburg was the bloodiest battle of the Civil War. Until Gettysburg that title had gone to the Battle of Chancellorsville, fought just two months before. And although later battles such as The Wilderness and Spotsylvania would surpass Chancellorsville, Gettysburg would remain the costliest Civil War battle.
It is estimated that there were at least 45,000 and possibly as many as 51,000 casualties in the two armies at Gettysburg. Note: the term “casualties” means not just people who were killed, but also includes men who were wounded (many of whom may have died of their wounds later), soldiers who were captured, and even men who ran away. It’s impossible to calculate an exact number because of missing or incomplete records. This estimate is one of the more conservative and probably significantly understates Confederate missing and wounded: