During the Vietnam War, battle 29 January23 February 1968, when 5,000 Vietcong were expelled by South Vietnamese and US forces. The city was finally taken by North Vietnamese forces 30 April 1975, after South Vietnamese withdrawal from the central highlands.
The mon, the central red disc, is called Hi-no-maru or sun-disc. The disc is set slightly towards the hoist. White symbolizes honesty and purity. Effective date: 5 August 1854.