The enemy in Vietnam was known as “Charlie.” “Charlie” may be any place and any one; man, woman or child. Guerrilla warfare strategy was “bold, tough and crafty.” Preferring to avoid open conflict and fight from ambush or infiltrate civilian populations whilst spreading confusion and terror by murder, mines and mayhem. Nearly 350 years ago William Shakespeare wrote the words ‘Come like shadows so depart.’ In Vietnam, American combat soldiers must heed these words as they probed for and pursued a shadowy enemy. In this final episode we will see how opposition to the Vietnam War in the United States bitterly divided Americans, even after President Richard Nixon ordered the withdrawal of U.S forces in 1973.