No he wasn't a general and din't have any experience.
Reportedly, Union General Ambrose was offered the command of the Army of the Potomac three times. He reluctantly accepted it and thus replaced George B. McClellan. Ambrose is said to have refused the command because of his loyalty to McClellan combined with the heavy responsibility he would inherit.
I believe you are referring to Ulysses Grant. He was a great general, and the Union wanted him to command their troops. However, he decided to go with his native Virginia and became a confederate general.
Robert E. Lee
At the start of the Civil War, Robert E. Lee was offered command of the Union forces but ultimately rejected the position. Lee, a respected military leader, chose to side with his home state of Virginia after it seceded from the Union. His decision led him to become the commanding general of the Confederate Army instead.
General Mead assumed the Union command from Hooker on his way to Gettysburg.
Robert E Lee
robert e lee
He was offered command of the entire Union army, but rejected.
i dont no
He was a union general and later became the 18th president
Lee declined the job and resigned his commission to fight for Virginia instead.