Tom

Post a citation for you numbers please. 

According to Wiki, casualties on the North were much less than the number you quote. 

"Total dead: 367,283–750,282"

On the South side Wiki states this,

"Total: 178,405 dead and 32,925 missing"

https://en.m.wikipedia.org/wiki/Korean_War

You make this sound as if it was all the fault of the US. We all know this was a proxy war between the US and China, so if you are going to lay blame, at least blame all the parties responsible.