L/33 Gun There were never any Sturmgeschütz with an L/33 gun. This was a notion created by British intelligence which misinterpreted captured reports and censored photos of a Sturmgeschütz Ausf.F with the muzzle brake painted out (Jentz).
“Saukopf” Saukopf is a term invented in postwar literature.The name used in the German reports for the cast gun mantlet on the Sturmgeschütz was “Topfblende” (pot mantlet) (Jentz).
Sturmpanzer IV fuer 15 cm Sturmhaubitze 43 (Sd.Kfz.166) "Brummbaer" - The Sturmpanzer IV was nickanmed "Stupa" by the troops. The name "Brummbaer" or "Brummbar" was never used in any German report during the war. The name "Brummbaer" is only found in Allied intelligence reports (Jentz).
Sturmgeschütz 38(t) The Jagdpanzer 38(t) was conceived and designed as a classic assault gun. The General der Artillerie laid claim to the design as the Sturmgeschütz neuer Art (new model) or Sturmgeschütz 38(t). General Guderian wanted the vehicle employed as a tank destroyer. In the end Guderian won and the official designation of the vehicle became Panzerjäger 38 fuer 7.5cm PaK 39 (L/48) - Sd.Kfz. 138/2. On 11-Sept-44 the designation was changed to Jagdpanzer 38 - Panzerjäger 38 (7.5cm PaK 39 (L/48)) (Sd.Kfz. 138/2) (New Vanguard 36 - Jentz).
“Hetzer” The name Hetzer was assigned to the E-10 project. This was an advanced design with a powerful gun and engine. While not clear it appears that the Czech design team misunderstood that Hetzer was a competitor's vehicle and applied the name to their own design. (New Vanguard 36 - Jentz).
Sturmhaubitze mit 10.5 cm Sturmhaubitze 42 (Sd.Kfz.142/2) (TBD)