The Tet Offensive. It’s not a battle – it’s a campaign, a campaign that would change the course of American history. Tet combined major set-piece battles with guerrilla strikes up and down the length of South Vietnam, there was fighting everywhere. One Colonel said his situation map lit up like a pinball machine. With this one stroke, General Giap and the North Vietnamese high command undercut the American war effort in Southeast Asia and considerably hobbled American foreign policy for decades. It wasn’t talk or ideas or values that seriously curtailed American policy ambitions – it was a battle – it was war. It was Tet.