The French Army used the requisitioned and new production guns in their CAMle 1938 which was a single-gun, towed tripod ground mount that entered service in 1940.  It was found to have some design shortcomings, which were addressed in the CAMle 1939 single-gun ground mount, also in use by the Army in 1940.  The CAMle 1940J was a twin-gun towed tripod ground mount, a few examples of which were produced in 1940.  Some sources indicate that the CAMle 1940J had a considerably increased cyclic ROF compared to the earlier designs, but this is unclear.

The French Navy belatedly placed orders with Hotchkiss at the start of the war and the naval version of the Model 1938 was to have used a water jacket, but it is believed that few if any of these actually entered service prior to the Armistice.

All Hotchkiss 25 mm guns were gas operated and the Model 1938 used a 15-round magazine.

Twin 25 mm mountings intended for Romania
Image courtesy of John Schaefer

25 mm on unidentified French destroyer
Caption translates as "Crew of an anti-aircraft weapon on a destroyer during a lull"
Image courtesy of John Schaefer

Army Twin 25 mm Model 1940J
Image courtesy of John Schaefer