Distressed over what he perceived as procrastination by the Army of the Potomac since Antietam, on October 1, 1862, President Abraham Lincoln, with a party of advisors, left Washington, D.C. for Harper’s Ferry to confer with Union General George McClellan. On October 2, Lincoln left Harper’s Ferry for McClellan’s field headquarters, where the president for two days occupied a tent next to McClellan’s.