1. SHE WAS A SERIAL—AND STRATEGIC—BRIDE.

Born Hedwig Eva Maria Kiesler in Vienna, Austria, the artist eventually known as Hedy Lamarr married six times between 1933 and 1965. Her last wedding vows were spoken to her own divorce lawyer, though he, too, eventually got the boot. But Lamarr didn’t go through all that for nothing. Alongside her first husband, arms dealer and Mussolini sympathizer Friedrich Mandl, Lamarr was privy to the ins and outs of Austrian weapons manufacturing and trade—information she would later offer to the U.S. military during World War II.