What was McClellan's campaign?

George B. McClellan's campaign during the American Civil War primarily refers to his leadership of the Army of the Potomac and the Peninsula Campaign in 1862. This ambitious operation aimed to capture the Confederate capital of Richmond, Virginia, by advancing up the Virginia Peninsula. However, the campaign faced setbacks, including delays and the unexpected resistance from General Robert E. Lee's forces, ultimately culminating in a tactical withdrawal and failure to achieve its objectives. McClellan's cautious approach and inability to capitalize on opportunities during this campaign led to criticism and his eventual removal from command.