"Door Knocker", M12 Gun Motor Carriage

The M12 Gun Motor Carriage was the first heavy self-propelled artillery piece of World War II. Only 100 were produced and they saw heavy use in Europe. It was known as the "Door Knocker" because of its long-range bunker busting capability.

Location:
1713 Southwest 11th Street Lawton, OK 73501
Identifier:
0.001
Institution:
U.S. Army Field Artillery Museum

"Slo Poke", M1922 Mark X Gun Motor Carriage

Date:
Rock Island, IL: Rock Island Arsenal

One of a tiny number of experimental self-propelled guns developed by the Ordnance Corps after World War I. "Slo Poke" features a Model 1920 Experimental 4.7 inch Gun mounted on a Caterpillar tractor. It was built at the Rock Island Arsenal and tested at Aberdeen Proving Grounds, Maryland. The driver sat in the small open compartment on the right side. The Field Artillery Branch did not support the development of self-propelled artillery pieces until after the beginning of World War II believing that horses and towed artillery pieces would be adequate.

Location:
1713 Southwest 11th Street Lawton, OK 73501
Identifier:
0.002
Institution:
U.S. Army Field Artillery Museum