The Panzerjäger I (Sd.Kfz. 101) was the first mass-produced German self-propelled tank destroyer of World War II, created by mounting an effective Czechoslovak 4.7 cm PaK 36(t) anti-tank gun onto the lightweight chassis of the Panzerkampfwagen I Ausf. B. Manufactured between early 1940 and 1941 by Alkett and Klöckner-Humboldt-Deutz, a total of 202 units were produced across two main series—distinguishable by their 5-sided and 7-sided open-topped, thin armor shields (14–15 mm). Weighing 6.4 tons with a three-man crew, the vehicle offered good long-range anti-tank capabilities, penetrating up to 40 mm of armor at 1,000 meters, which provided the Wehrmacht with a much-needed mobile armor-fighting capability during the 1940 Battle of France and early Eastern Front campaigns.
