Winfield Scott: July 5, 1841 - November 1, 1861
1864
George McClellan
Irvin McDowell
The first assault on Charleston by the Union forces was on July 11, 1863.
The commander of the Union Army at First Bull Run (First Manassas) was Major General Irvin McDowell.
The job of commander of the Union Forces was offered to Robert Edward Lee.
Robert Anderson was the commander at Ft. Sumter .
U.S. Grant
General George Meade was the commander of the Union forces at Gettysburg.
That depends on which Union forces. U.S. Grant was overall commander of Union forces.
U.S. Grant
The first commander of the Union troops during the American Civil War was Brigadier General Irvin McDowell. He led the Union forces at the First Battle of Bull Run (also known as First Manassas) in July 1861. McDowell's command faced significant challenges, and after the Union defeat in that battle, he was eventually replaced by General George B. McClellan.
Ulysses S.Grant
John Pope
As President, he was Commander-in-Chief of all Union Armed Forces.
George Brinton McClellan
1864