Oflag XIII-B was a German Army World War II prisoner-of-war camp for officers (Offizierslager), originally in the Langwasser district of Nuremberg.

In 1943 it was moved to a site 3 km (1.9 mi) south of the town of Hammelburg in Lower Franconia, Bavaria, Germany.

The amount of coal for heating during the bitter winter months was strictly rationed, and the average temperature in the barracks was about 20 °F (−7 °C).

Food rations were only about 1,070 calories a day, though additional supplies, mostly root vegetables, could be bought from the canteen when available.

[3] In late March 1945 General George S. Patton ordered the 4th Armored Division to liberate the POWs in Oflag XIII-B, then 80 km (50 mi) behind the front lines.

Although Task Force Baum arrived at the camp on 27 March 1945 and attempted to liberate the U.S. POWs, the mission was a failure; of the roughly 300 men of the task force, 32 were killed in action and only 35 made it back to Allied territory, with the remainder being taken prisoner.