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In general terms, General George B. McClellan served only four months as general in chief. During his tenure there were several major developments. The Peninsula campaign was tried and failed, which led to the Second Battle of Bull Run. This in turn was followed by the South's march into Maryland and into the Battle of Antietam. This was yet another significant military operation. McClellan was relieved of duty some seven weeks after that horrific battle.

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9y ago

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