Bull Run is the first great battle of the Civil War and the first big debacle of the Northern troops. That's why, to the north, all of them preferred to forget this shameful battle and bury it in the depths of their memory. All of them? No... Blutch, he remembers it as if it were yesterday. He will tell this famous battle to an imprudent white-bec, in the form of flashback. How it happened, the popular fervour that led civilians to attend the battle as if it were a spectacle, the northern debacle and finally the roles that Chesterfield and himself played during this battle. And most of all, why he, Blutch, kept a good memory of it!