Yes. He'd lost his patience with McClellan, who moved too cautiously and missed every opportunity.
Ambrose Burnside
I think you mean Ambrose Burnside. He was replaced by Joe Hooker.
Ambrose Burnside
General Ambrose E. Burnside had just been named by Lincoln as the general in charge of the Army of the Potomac. Burnside replaced the former head of this army, General George B. McClellan.
On November 7, 1862, General Burnside took command of the Army of the Potomac. He had replaced General George B. McClellan.
George Mclellan
After Antietam (Sept 17, 1862) when McClellan once again believed he needed time for his troops to rest. President Lincoln replaced him (on Nov 7) with General Ambrose Burnside. That was the end of McClellan's service as a Union military leader. As an aside, General Burnside felt uncomfortable replacing George B. McClellan. He had been loyal to him, also, he was not sure the command of the Army of the Potomac would be a fit for his abilities.
That could mean Ambrose Burnside or Ambrose P. Hill.
Ambrose Burnside
Ambrose Burnside
George McClellan
Ambrose Burnside was a Major General of the Union Army.