How US sailors pulled off a daring high-seas mission to save a sinking Nazi submarine and capture its secrets As Allied troops prepared to invade France in June 1944, the US Navy was trying to deliver another blow to the Nazis in the middle of the Atlantic. - In June 1944, Allied militaries were preparing to cross the English Channel and invade France. - Hundreds of miles south, US Navy crews were preparing to land another kind of blow to the Nazis. - Capturing U-505 was an intelligence coup, yielding vital insight into German submarine operations. In early June 1944,...