The logistics problem could have been much smaller if the port of Inchon had been available to support advancing EUSAK and 5AF units instead of X Corps.
Logistical constraints had made EUSAK's advance into North Korea a calculated risk, with its supply being almost entirely by airlift.
MacArthur's assumptions regarding the threat posed by enemy action were proved wrong when, on October 25, the Chinese, in what they called their first campaign, began attacks against elements of EUSAK, followed by similar attacks against X Corps on November 2.
Once supplies were built up he planned to have EUSAK launch an offensive to complete the destruction of communist forces in Korea.
(46) When EUSAK complained, a new arrangement was adopted where X Corps would get only emergency airlift.