Les Tuniques Bleues is a Belgian series of bandes dessinées, first published in Spirou magazine and later collected in albums by Dupuis. Created by artist Louis Salvérius and writer Raoul Cauvin, the series was taken up by artist Lambil after Salverius' death. It follows two United States Army cavalrymen through a series of battles and adventures. The first album of the series was published in 1970. The series' name, Les Tuniques Bleues, literally "the bluecoats", refers to the uniforms of the Union Army during the American Civil War. Cinebook has started to print the comics in English as "The Bluecoats", releasing Robertsonville Prison in 2008. It is one of the best-selling series in French-language comics.

Spirou is a weekly Belgian comics magazine published by the Dupuis company since April 21, 1938. It is an anthology magazine with new features appearing regularly, containing a mix of short humor strips and serialized features, of which the most popular series would be collected as albums by Dupuis afterwards.