In 1984, President Reagan commemorated the 40th anniversary of the invasion of Normandy, and paid tribute to the World War II soldiers known as "The Greatest Generation." "These are champions who helped free a continent," he said. "These are heroes who helped end a war."

But in his new book, historian David Nasaw calls them "The Wounded Generation."

"They are the Greatest Generation, but they returned from war, bringing wounds home with them that are invisible; they're psychic wounds," he said. "Now we know that a lot of those wounds were PTSD. But PTSD was not diagnosed for 40 years after the return of the World War II veterans."

One clue he came upon was the famous photo of Times Square on VJ Day, 1945, of a sailor kissing a nurse. He's overpowered her; her fist is clenched. Nasaw sa

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