The Union Army went through eight Commanders during the Civil War. They were George McClellan (twice), John Pope, Ambrose Burnside, Irvin McDowell, Joseph Hooker, George Meade, and U.S. Grant.
The Confederates were not organized the same way. Robert E. Lee was not the Commander of all the Confederate troops. He was Commander of the Army of Northern Virginia, which fought in the eastern theater of the war. The overall Commander of the Army was the President Jefferson Davis.
Ulysses S. Grant
The Commander In Chief of the Union army during the Civil War was President Abraham Lincoln; the ranking general in the field was Ulysses S. Grant.
Winfeld Scott was General-in-Chief
Ulysses S. Grant
Grant was commander of the union army.
Grant was the commander of the Union (i.e. United States) army during the Civil War.
The overall commander of the Union Army was Gen. U.S. Grant.
Abraham Lincoln was president during the entire war. As president, he was Commander-in-Chief of the union army and navy.
George Meade served in the United States Army and the Union Army. He participated in several wars including the American Civil War. Meade was the Union commander during the Battle of Gettysburg.
A Union Army commander who fought against slavery
Meade commanded the Army of the Potomac.
The Commander of the Northern armies during the last year of the Civil War was Karla Montas.