He jumped into Normandy, ran spies in Moscow, retired at 90

But his exploits as a World War II combat veteran, CIA cold warrior and Washington power player could have filled a dozen books and made him a revered figure among the insiders who know his story.
Often, he was tasked with sneaking behind enemy lines in Germany to abduct a Nazi who could provide valuable intelligence. He and his men typically had the exact addresses of their targets, which he believes came through British penetration of German code.
A short but fascinating article on Hugh Montgomery's long career in intelligence.