During the American Civil War Special Order 191 was a general movement order issued by Confederate General Robert E. Lee. It was famously intercepted by a Union Solider, thereby granting the Union a crucial intelligence gain. What was also discovered with the order itself?
Answer: Three excellent Cuban cigars. Needless to say, the cigars went ‘missing’ soon after the order was discovered, being regarded as a ‘prize of war’.
Source: What If? by Robert Cowley