The most serious mistake made was its excessive expansion of war objectives, demonstrated mainly on its policy of "neutralization of Taiwan", its decision to cross the 38th Parallel, and the principle of" voluntary repatriation "of POWs. 美国战略决策的最大失误就是战争目标的过度扩张,集中地反映在台湾中立化政策、越过三八线决策和战俘自愿遣返原则这三个最重要的决策上。