Panzerjäger I (x2)
German High Command recognised the need for a specialised vehicle capable of engaging enemy heavy tanks with a weapon of greater penetrating power than the standard 3.7cm PaK36.
To meet this need, they fitted a Czech 4.7cm anti-tank gun in a limited traverse mount on a Panzer I chassis with a gun shield to protect the crew. The resulting vehicle was called the 4.7cm PaK(t) (Sf ) auf Panzerkampfwagen I Ausf B, or Panzerjäger I for short.
521. Panzerjägerabteilung (521st Tank-hunter Battalion), with three companies of six tank destroyers each, was available at the start of the campaign in France. Three other tank-hunter battalions, 616., 643., and 670. Panzerjägerabteilung were still in training when the invasion began and were sent to the fighting as soon as their training was completed.