““For reasons that are still unclear, Union troops in camp at Frederick came across a copy of Special Order 191, wrapped up among three cigars. The order contained Lee’s entire marching plans for Maryland, making it clear that the Army of Northern Virginia had been divided into multiple parts, which, if faced by overpowering strength, could be entirely defeated in detail and bagged separately before they could regather into one fighting force. The “Lost Order” quickly made its way to General McClellan, who took several hours to debate whether or not it was intentional misinformation or actually real. McClellan is usually faulted for not acting quickly enough on these orders,””
