Pz.Sfl.Ivb fur 10.5cm le.FH18/1 (Sf.) Ausf. A arly in WWII, German units relied on towed howitzers like the 10.5cm le.FH.18. Various proposals were made for a self-propelled version, with Krupp offering one based on a modified Panzer IV chassis. Named the Pz.Sfl.IVb or Sd.Kfz.165/1, its open-topped turret contained a 10.5cm le.FH.18 howitzer that was capable of only a 70� traverse by hand. A test series of eight vehicles was produced in November 1942 and they were combat tested in Russia. However, production was eventually cancelled because the administration decided they wanted carriages with all-round traverse. In the event, the le.FH.18 was successfully mounted on a Panzer II chassis in the well-known Wespe variant.