During the Vietnam War, the zones patrolled by South Koreans were deemed the safest of all of them. Why were the South Koreans so much more effective than the US and other allies? | AskHistorians Archive Observer

During the Vietnam War, the zones patrolled by South Koreans were deemed the safest of all of them. Why were the South Koreans so much more effective than the US and other allies?

by George_S_Patton_III

Shackleton214

What's the source for the statement that zones patrolled by South Koreans were deemed safest?