I think the most important issue with McArthur was that he wanted to cross the Yalu River into China. The fear was that this would bring in a far larger Chinese military presence. We had to make the battle cost enough so that China would decide on an acceptable peace, but not so costly that they needed revenge to save face. Given that my son has almost 20 years in the Army and Special Forces, I tend to read and think a lot about military history and tactics. Please remember that Truman had the guts to drop the BOMB, without which horror we probably would have had a subsequent nuclear war, probably with Russia.
Good point but we penetrated China far beyond the Yalu but it was not made public. I don’t know why we stopped— FEAR? We slaughtered 300,000!! The first mistake was calling ourselves “UNITED NATIONS “ police. You can’t make that up but I did love those nukes going up in Japan. Gotta give the Truman boy credit there.