The Krampfwagen Hedi APC (Armored Personnel Carrier) was developed in Germany during World War II. It was essentially a modified French Char B1 tank chassis, repurposed by the Germans for use as an armored personnel carrier. The exact dates of its use and the specific units that utilized it are not extensively documented. However, it's known that the German Wehrmacht made use of various captured and repurposed vehicles during the war, including APCs like the Krampfwagen Hedi. These vehicles would have likely seen service on the Eastern Front and possibly other theaters of the war.