Civil War Nurses Battlefield Photo

 

At least 618,000 Americans died in the Civil War, exceeding the nation's loss in all its other wars, from the Revolution through Vietnam. The Union armies had from 2,500,000 to 2,750,000 men. The leading authority on casualties of the war, Thomas L. Livermore, studied 48 of the war's battles and concluded that of every 1,000 Federals in battle, 112 were wounded. Of every 1,000 Confederates, 150 were hit.

 

The largest number of deaths in a single battle was Battle of Gettysburg held July 1-3, 1863 in Gettysburg, Pennsylvania. Confederate Commander: Robert E. Lee
Union Commander: George G. Meade
Confederate Forces Engaged: 75,000
Union Forces Engaged: 82,289
Winner: Union
Casualties: 51,112 (23,049 Union and 28,063 Confederate)
This Civil War soldier dies in a California Civil War Reenactment held each Labor Day weekend (the first weekend in September).

Mortality was greater among Confederate wounded, because of inferior medical service. The great battles, in terms of their toll in dead, wounded, and missing is listed on this site:
Their losses, by the best estimates:

Battle deaths: 110,070
Disease, etc.: 250,152
Total 360,222

The Confederate strength, known less accurately because of missing records, was from 750,000 to 1,250,000. Its estimated losses:

Battle deaths: 94,000
Disease, etc.: 164,000
Total 258,000