Who were the Blue Devils?

The French soldiers belonging to the Chasseurs Alpins were called Blue Devils by the Germans during the First World War because of their dark blue uniforms and their dashing attacks in the fighting in the Vosges. Chasseur is derived from French chasser (“to hunt”). The Chasseurs in the French military service may consist of eight light infantry or light cavalry units. The Chasseurs Alpins during the First World War comprised twelve battalions of light infantry specially trained and equipped for mountain fighting. A corps of Chasseurs Alpins fought as a sort of unofficial or guerrilla unit in the French Revolution. They became an official unit of the French Army in 1885. Blue Devils is an old term in the sense of low spirits or a fit of the blues.