On 31 January 1968, the North Vietnamese Army (NVA) and Viet Cong (VC) guerrillas launched a spectacular offensive in South Vietnam. Five of the country's six major cities, 36 of its 44 provincial capitals, and 64 of its 245 district capitals were attacked that day. A sapper squad even penetrated the grounds of the U.S. Embassy in Saigon. The media broadcast images of combat at the embassy and in other key cities, causing tremendous psychological shock for the American viewing public. Ultimately, U.S. and Army of the Republic of Vietnam (ARVN) troops killed or captured most of the enemy...