By and large, the United States has escaped the accusation of war crimes having led the world to victory in two global battles. But, the History Channel reveals a dark chapter in the nation's past in History Undercover: Declassified - Human Experimentation. In 1996, secret U.S. military operations were discovered that presents a very different picture of national policy. Experiments with biological weapons and the testing of chemical warfare were only part of the story. Here, those that took part describe the Cold War projects in chilling detail.By and large, the United States has escaped the accusation of war crimes having led the world to victory in two global battles. But, the History Channel reveals a dark chapter in the nation's past in History Undercover: Declassified - Human Experimentation. In 1996, secret U.S. military operations were discovered that presents a very different picture of national policy. Experiments with biological weapons and the testing of chemical warfare were only part of the story. Here, those that took part describe the Cold War projects in chilling detail.