Inside Hitler’s U-Boat War" dives beneath the surface of World War II history to reveal the human stories behind Germany’s ...

Here’s What You Need To Remember: Allied pilots were at first taken aback by the new aggressive tactics—but quickly adapted. If a U-Boat chose to remain surfaced and spit out flak, flyers would circle ...

Here’s What You Need to Know: The U.S. Navy responded with overwhelming force to the German threat. In the closing weeks of World War II in Europe, American intelligence determined that a detachment ...

When Allied forces opened the hull of a seized German submarine, they uncovered a machine that made no sense. Strange valves, ...