The Bluecoats - Volume 3 - The Skyriders

In this volume, Blutch and Chesterfield go up in an observation balloon in
order to spy on the Confederate troops. But the plot thickens when our heroes
crash land on their superiors. The generals send them behind enemy lines to
try and free Stark who has been captured on a previous sortie. A tricky
mission, not only for our heroes, but also for the other side. “The American
Civil War has never been so amusing. Raoul Cauvin and Willy Lambil have a
knack for turning the miseries of war into a slapstick routine.” Penny Kenny
(Comicsbulletin.com)