On 5th Feb 1945 a German raid (Dyhernfurth raid) was organized by GeneralmajorMax Sachsenheimer to recapture a plant for the manufacture of the nerve agent tabun from the Russians. (On Ricos picture you see the Dyhernfurth castle which is situated not far away from the plant.)
A German unit with roughly the strength of a battalion crossed the Oder River, seized the factory, and deployed an anti-tank screen. On that day, the Germans destroyed documentation and evidence of the camp's atrocities and pumped tabun into the Oder River, while the screening force resisted two small-scale Soviet counter-attacks. In the evening of February 5, the German force pulled back behind the Oder River.