After the failure on the Peninsula, it appeared that McClellan would lose his command.  But, things changed after the disaster that was Second Manassas, and McClellan was restored over the protests of Lincoln's cabinet.  After the indecisive victory at Antietam, McClellan refused to press his advantage, and President Lincoln determined that the time had come to place the Army of the Potomac under new leadership.  A general without a command, McClellan was recruited into Democratic politics and made an unsuccessful run for the presidency in 1864.

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