Had he ignored taking Seoul and cut off the retreat of KPA - none of that would have happened. It's similar to Stalingrad and the evacuation of the Caucuses, in reverse. Any commander serving in Europe would have known that, but it's Mark Clark - Anzio territory
Shamelessly copied from Russell Stolfi via Wikipedia, contrasting American tactics with German Tactics in the Baltic
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The American advance was characterized by cautious, restrictive orders, concerns about phase lines, limited reconnaissance, and command posts well in the rear, while the Germans positioned their leaders as far forward as possible, relied on oral or short written orders, reorganized combat groups to meet immediate circumstances, and engaged in vigorous reconnaissance