Fd U West was the headquarters of the Befehlshaber der Unterseeboote West (Commander of Submarines West) during World War II, located in Angers, France. After the Fall of France in 1940, the Germans appropriated the castle and surrounding area for military use, establishing it as a key command center for U-boat operations in the Atlantic. The site served as a strategic location for coordinating submarine warfare against Allied shipping convoys.
Today, the bunker stands as a historical reminder of the extensive German military infrastructure established in occupied France during the war.