What is the setting of MASH by Richard Hooker?

The setting of the book has four major parts. First, it takes place in South Korea and second, it takes place within the US Army during the Korean War. The Korean War took place, ostensibly, between North Korea and South Korea, from 1950 to 1953. The war has never been officially ended by treaty. The small Korean peninsula was divided as a result of the defeat of Japan at the end of World War II. Soviet forces captured the North and American forces captured the South.