At 3:00 a.m. on D-Day, just hours before the big invasion, the Nazi leaders got a warning message about what was coming—but it was too late for them to get ready.
What the Nazis didn’t know was that the spy who sent that message was actually a double agent working for the British. He sent the message late on purpose, leaving the Nazis open and unprepared for the attack that would change the course of the war.
This double agent was Juan Pujol García, a Spanish motel owner and chicken farmer. He convinced the British to let him be their spy because he wanted to help “for the good of humanity.”