4. Time For the U-Boat to Make a U-Turn
During World War II, the German Navy’s U-boat fleet executed a series of daring and strategic operations that extended their reach to the East Coast of the United States, a campaign often referred to as the “Second Happy Time” or “Operation Drumbeat.”

These submarines patrolled the American Atlantic seaboard, Gulf of Mexico, and Caribbean Sea, exploiting the initially unprepared defenses of the U.S. The impact of these missions was profound, with numerous American and Allied vessels sunk within sight of the coast, causing significant loss of life and material.