This article is part of a special report on the 50th anniversary of the Pentagon Papers.

Brandishing a captured Chinese machine gun, Secretary of Defense Robert S. McNamara appeared at a televised news conference in the spring of 1965. The United States had just sent its first combat troops to South Vietnam, and the new push, he boasted, was further wearing down the beleaguered Vietcong.

“In the past four and one-half years, the Vietcong, the Communists, have lost 89,000 men,” he said. “You can see the heavy drain.”

That was a lie. From confidential reports, McNamara knew the situation was “bad and deteriorating” in the South. “The VC have the initiative,” the information said. “Defeatism is gaining among the rural population, somewhat in the cities, and even among the soldiers.”

Lies like McNamara’s were the rule, not the exception, throughout America’s involvement in Vietnam. The lies were repeated to the public, to Congress, in closed-door hearings, in speeches and to the press. The real story might have remained unknown if, in 1967, McNamara had not commissioned a secret history based on classified documents — which came to be known as the Pentagon Papers.

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