The Inchon landings were a crushing blow for the KPA, catching it completely unprepared and breaking the already weak forces along the perimeter. With virtually no equipment, exhausted manpower and low morale, the KPA were at a severe disadvantage and were not able to continue to pressure on the Pusan Perimeter while attempting to repel the landings at Inchon. By September 23, the KPA were in full retreat from the Pusan Perimeter, with UN forces rapidly pursuing them north and recapturing lost ground along the way.