SD:Canon CA 25mm

 is a French Anti-air unit added in Back to Hell.

Overview
The Hotchkiss M39 25mm anti-aircraft cannon (mitrailleuse de 25 mm CA mle 39) was created after World War I, in response to a request by the French military. Hotchkiss' design was initially rejected and the resulting 1938 model was instead manufactured for export to Romania and licensed to the Japanese. It wasn't until 1939 that the military reconsidered its position, as the preferred Schneider 37mm autocannon was still not ready for mass production. Hotchkiss updated the design with a more stable carriage and the resulting weapon was pressed into service. However, the few hundred guns supplied to the French Army were too little, too late. Captured units were used by Nazi security units and rear echelons.