 Between 1934 and the mid-1940s, several variants of the Panzer I were designed, especially during the later years of its combat history. Because they were obsolescent from their introduction, incapable of defeating foreign armor, and outclassed by newer German tanks, the Panzer I chassis were increasingly adapted as tank destroyers and other variants. One of the best-known variants was the kleiner Panzerbefehlswagen ("small armored command vehicle"), built on the Ausf. A and Ausf. B chassis — 200 of these were manufactured. The Panzer I Ausf. B chassis was also used to build the German Army's first tracked tank destroyer, the Panzerjäger I. This vehicle was armed with a Czech 47-millimeter (1.85 in) anti-tank gun.
