On October 27, 1941, President Franklin D. Roosevelt delivered a Navy Day radio address ten days after a German U-boat torpedoed USS Kearny, killing eleven American sailors. “We have wished to avoid shooting. But the shooting has started,” he declared. Moments later, he added: “America has been attacked.” His message was clear: the Atlantic conflict already involved American ships and American lives.
Roosevelt then made a striking claim. “I have in my possession a secret map, made in Germany by Hitler’s government,” he announced. He described it as a blueprint for reorganizing South America and part of Central America into five Nazi-dominated “vassal states.” One of those states, he warned, would include Panama and the strategically vital Panama Canal. “This map makes clear the Nazi design not only against South America but against the United States itself,” he told listeners.
Later accounts and historical research identified the purported Nazi map as a British intelligence forgery, associated with British Security Coordination’s covert campaign to encourage American support for the war against Germany. The episode illustrates how fabricated intelligence could serve a genuine strategic objective: convincing Americans that Britain’s struggle was also their own. It does not, by itself, establish that Roosevelt knew the map was false.
Less than two months after the address, the United States was formally at war with Germany—but not because the alleged map had compelled American intervention. Following Japan’s attack on Pearl Harbor, Germany declared war on the United States on December 11, 1941. Congress responded with its own declaration that same day.
