Vietnam War and the Tet Offensive
Vietcong guerrilla fighters violated the temporary truce they had pledged to observe around the lunar new year celebrations, and surged into more than one hundred towns and cities, including Saigon. Shifting the war for the first time from its rural base into the new arena of South Vietnam's supposedly impregnable urban areas, it was a campaign of 'enormous breadth, speed, and scope.' It shook US imperialism to its roots and had a dramatic and lasting effect on US public opinion. It was a campaign that had been in preparation since a study carried out by G…