Comparing: T18 HMC vs. Wespe

A proposed 75 mm howitzer on the chassis of the M3 light tank. Developed by the Firestone Tire and Rubber Company in the fall of 1941. Two prototypes were ordered after the project was approved. The first vehicle was produced in May and underwent trials in June 1942 on the Aberdeen Proving Ground. The project was discontinued in favor of more promising designs.

Self-propelled gun on the basis of the outdated Pz.Kpfw. II. The vehicle was designed as a mobile artillery unit for armored forces. The armored cabin with the modified 105 mm field howitzer was mounted on the middle and rear parts of the chassis. This SPG was a successful re-use of the outdated chassis. A total of 700 vehicles were built from 1943 through 1944.