An SPG with the 75-mm short-barrel S-type Blockhaus Schneider howitzer installed in the armored cabin. It was larger than previous guns, which increased the vehicle mass to 7.3 tons and cut its ammunition to 30 shells. High command saw value in the project and placed an order for 970 vehicles. By the end of World War I, a total of 39 vehicles were manufactured; after that, production was discontinued. There is no reliable information about participation of this SPG during the 1940s, but some vehicles took part in battles in North Africa. Two SPGs were captured by the Allies (U.S.A., U.K., France) during Operation Torch.
Time for the successive autoreloading of each shell into the magazine.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.