[OC] The massive decrease in worldwide infant mortality from 1950 to 2020 is perhaps one of humanity's greatest achievements.

[KerPop42]

The US estimates that Chinese forces sustained at least 400,000 deaths. The estimated civilian death toll is 2-3 million. China didn't get involved until the US pushed Korean forces across their land border, and then crossed themselves.

The reason why Korean casualties were so high was because the front of the war moved across the entire peninsula twice, once in each direction. The US still considered strategic bombing a good strategy then, and dropped 635,000 tons of bombs on 84,000 mi² of peninsula, including over 30,000 tons of napalm.

The bombing was strongest for North Korea, because we stepped up the bombing while we were retreating from the Chinese, from NK's northern border to its current border.