Oflag XXI-C was a German Army World War II prisoner-of-war camp for officers (Offizierlager) located in Ostrzeszów in German-occupied Poland.

[1] In March 1943 it was moved to Ostrzeszów (renamed Schildberg during the German occupation)[1] taking over buildings previously used as a camp for wounded and sick British non-commissioned officers and designated Stalag XXI-A.

[3] Two Norwegian POWs escaped during the evacuation in January 1945 and first hid in an abandoned prison building in Ostrzeszów, and then were received by a local Polish family.

On 5 May 1945 the Norwegians were transported east to a camp near Legnica in Silesia, then travelled for several days by train to Hamburg and Aarhus, Denmark, finally arriving in Oslo on 28 May 1945.

[5] A permanent exhibition devoted to the history of Norwegian POWs of the camp was established in 1996 within the Władysław Golus Regional Museum in Ostrzeszów.