 The battle was one of the longest and bloodiest of the war, and the battle negatively affected American public perception of the war.By the beginning of the North Vietnamese Tet Offensive on 30 January 1968, which coincided with the Vietnamese Tết Lunar New Year, large conventional American forces had been committed to combat operations on Vietnamese soil for almost three years.Highway 1, passing through the city of Huế, was an important supply line for Army of the Republic of Vietnam (ARVN) and United States forces from the coastal city of Da Nang to the Vietnamese Demilitarized Zone (DMZ), the de facto border between North and South Vietnam only to the north of Huế.