Ulysses S. Grant
General U. S. Grant
Abraham Lincoln, as President, was commander-in-chief of the Union forces.
Ulysses S.Grant
I am not sure I would call him a "hero", but he was commander of the Union forces in the Civil War and became President of the United States.
1864
As President, he was Commander-in-Chief of all Union Armed Forces.
Abraham Lincoln
Lincoln served as President during the Civil War. in 1864, he appointed Grant as the overall commander of Union forces. Grant accepted Lee's surrender in 1865.
General and commander of northern forces towards the end of the civil war
George McClellan
In their capacity of the Union and CSA commander in chief they led and ruled the North and the South during the Civil War.