Ambrose Burnside
General George B. McClellan
1861- General McDowell (replaced) 1861- General McClellan (replaced) 1862- Major-General Henry Halleck (replaced) 1863- General McClellan (replaced) 1865- Lieutenant-General Ulysses S. Grant
McDowell was replaced by George B. McClellan.
General George B. McClellan
He wasn't. Meade wasn't replaced at all. He was in at the end. McClellan had been replaced by Burnside after the Battle of Antietam in September 1862 for failing to pursue and destroy Lee's army.
General Ambrose Burnside replaced General George McClellan as the head of the Union Army after McClellan was removed from command in November 1862. Burnside is best known for his leadership during the Battle of Fredericksburg, which took place in December 1862, although his tenure was marked by significant challenges. His command was short-lived, as he was eventually replaced after suffering heavy losses.
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.
No. McClellan was Commander of the Department of the Ohio, Commander of the Department of the East before being promoted to General in Chief and Commander of the Army of the Potomac. He was replaced as Commander of the Department of the Ohio by Ormsby M. Mitchel. He was replaced as Commander of the East and General in Cheif by Henry Halleck and replaced as Commander of the Army of the Potomac by Ambrose E. Burnside.
Eventually fired him. "If General McClellan does not wish to use the army, perhaps I may borrow it for a while."
On November 7, 1862, General Burnside took command of the Army of the Potomac. He had replaced General George B. McClellan.
McClellan was replaced by Major General Ambrose E. Burnside on November 7, 1862, shortly after the Battle of Antietam.
When General George B. McClellan assumed command of the Army of the Potomac, a replacement was needed for the Ohio Department. General William S. Rosecrans was selected. He was a West Point graduate and a soldier of known competence.