Comparing: Krupp-Steyr Waffenträger vs. E 25

A vehicle project by Steyr as a special artillery transporter that would be able not only to transport the gun but also to fire it from the chassis. To keep costs down and reduce complexity, the design used many components of the Raupenschlepper Ost, a tracked artillery mover. The turret and gun were supplied by Krupp. One wooden model and one prototype were manufactured by September 2, 1944.

The development of the E 25 was part of the "E" program, supervised by the Waffenprüfamt 6 committee. The E 25 was developed by the Argus company (Karlsruhe, Germany) under the supervision of Dr. Herman Klaue. No prototypes were manufactured.