Mr. Persico is the author, most recently, of "Roosevelt's Secret War: FDR and World War II Espionage" (Random House, 2001).
He said he knew that his father worked on secret projects during the war but had no sense until much later of how important it had been.
"Some activities of American prisoners of war within German prison camps must remain secret not only for the duration of the war against the present enemies of the United States but in peace-time as well, " the document says.
CNN: Lawmakers to Army chief: Honor soldiers held as slaves by Nazis
It was an open secret, after the Kosovo war, that American commanders were disappointed by their allies' lack of precision-guided weapons, electronic-warfare equipment and secure communications.
Bletchley's role in breaking German codes was kept secret not just during the war but for decades after and only began to emerge in the 1970s.
BBC: Bletchley Park enigma code huts prepare for restoration
Ellsberg, a former military analyst, has said Manning's disclosures may be more significant than his own leak of a top-secret history of the Vietnam War expansion in 1971.
In his upcoming book, bestselling author Robert Greene turns his attention from the laws of power, seduction and war to the secret path taken by all top performers.
FORBES: Why Apprenticeships Are the Fastest Way to Acquire Skills
The Pentagon has demanded that Wikileaks remove a trove of secret documents on the Afghanistan war from its website and cancel plans to publish anything more it holds.
BBC: Pentagon demands Wikileaks return Afghanistan documents
In his book, "Plan of Attack, " Woodward reported that prior to the invasion of Iraq, Bandar was briefed on top-secret U.S. war plans in order to enlist Saudi support.
Details of the sinking of HMS Dasher were sealed in top-secret Royal Navy Files after the war.
Living in the Cold War's most secret spy station on top of the wreckage of Nazi Germany.
After decades of emigration and decline, Poland's Jewish population is growing again, as children sheltered in secret by gentile families during the war rediscover their roots.
ECONOMIST: New thinking and old wounds around the Auschwitz death camp
Using their extensive knowledge of top-secret Soviet research projects during the cold war, they tried to find those with commercial potential.
Kiriakou later worked as a consultant for the US news network and published a book, entitled The Reluctant Spy: My Secret Life in the CIA's War on Terror.
It's no secret that Facebook and Google are in a war for the social web.
Released earlier this week, Call of Duty: Black Ops takes players on secret missions abroad during the height of the Cold War.
At the height of the Cold War, Karl had built his own secret satellite dish so he could watch the Eurovision Song Contest on Finnish TV.
On September 20th, Epic Games will launch Gears of War 3, that part is not a secret.
On 27 September, the historic Greenbrier hotel in West Virginia, home to the Bunker, the super-secret fallout shelter for members of Congress during the Cold War, introduced 26 Windsor Club rooms over two floors.
Now he's returning with two films: the smallish War Horse and The Adventures of Tintin: The Secret of the Unicorn.
UN's Special Commission, whose job it has been since the Gulf war ended in 1991 to strip Iraq of its secret chemical and biological weapons and the missiles to fire them.
He praised "the EU's secret weapon - an unrivalled way of binding our interests so tightly that war becomes impossible".
The tunnels were still in secret use long after the Battle of Britain had given way to the Cold War.
The Cold War was a series of interconnected but discrete operations, fought with secret forces whose very principle was deniability.
John Armitt, chairman of the Olympic Delivery Authority, explained how "having a clear focus" and a bit of pressure was the secret to bringing in "the biggest regeneration in a single place since World War II" on time and within the budget.
Comedies Two Pints of Lager and a Packet of Crisps, Goodness Gracious Me and Alistair McGowan's Big Impression join dramas Carrie's War and Blackpool and children's classics Stig of the Dump and The Secret Garden on the free service, which can be accessed online at www.clubcardtv.com.
The admitted secret agents were eventually flown to Austria, where, in a scene reminiscent of a Cold War spy drama, they were swapped on a Vienna airport tarmac for four men who had been imprisoned in Russia, most on charges of spying for the West.
Previously secret documents show British officials covered up evidence about the assassination of a colonial governor in East Asia after World War II, fearing the truth might spark a war.
Though many Serb soldiers will be angry over the war's outcome, there seemed little reason to doubt that Mr Milosevic, backed by the secret service and interior ministry, could still deliver a deal once deprived of any more wiggle-room.
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