On 30 March 1972, while peace negotiations had been dragging on for four years in Paris, the North Vietnamese launched a wide scale offensive in order to break the stalemate. At that date, practically no American ground forces remained in South Vietnam where a limited offensive was expected in the Central Highlands area. But nobody imagined the magnitude of the multidivisional, armor led onslaught. The blow fell first across the Demilitarized Zone (DMZ) separating the North from South Vietnam (see Volume 1). Following from the initial attack, in a surprise move, three communist divisions with T-54 tanks attacked from their sanctuaries in Cambodia just north of Saigon. Their tanks ventured into the streets of An Loc City where they were checked by a desperate and heroic stand by the South Vietnamese soldiers and their American advisers, thus saving the capital of South Vietnam.