The Jeju Uprising was a rebellion from April 3, 1948 until May 1949 on the South-Korean Jeju island that followed the brutal suppression of Korean protesters, some of whom had been marching against the elections that were held only in South Korea, by national police employed by the US military government. Between 14,000 and 30,000 individuals were killed in fighting between various factions on the island or were executed. The brutal suppression of this rebellion by the South Korean army resulted in many deaths, the destruction of many villages on the island, and more rebellions on the Korean mainland. Several hundred members of the South Korean 11th Constabulary Regiment mutinied; small isolated pockets of fighting continued into September 21, 1954. Up to 40,000 residents of Jeju escaped from the fighting to Japan. Memory of the event was equally brutally suppressed by punishment and destruction of sites.