A quiet day in the Union Army ... Soldiers are resting, Blutch and Chesterfield are arguing, and the generals are plotting strategy. Things change suddenly with the arrival of a new regiment, sent as reinforcements to counter the imminent arrival of the Confederates. With them is a young dog, Sallie, who's been on every battlefield with her uniformed masters, and who takes an immediate liking to Chesterfield, to the point that she accompanies him on a dangerous scouting mission ...

The Belgian-born author Raoul Cauvin was a prolific author and, at the time of his death in 2021, was still writing several series at the same time. In 2006 alone, he had six entries on the bestselling new comics list in France, including Cedric - also published in English by Cinebook - and The Bluecoats. Also born in Belgium, Lambil published his first comic, Sandy, in 1959. He has drawn 60 volumes of The Bluecoats since taking over from Salvérius, the series' original illustrator, who died in 1972.