On 22 April 1951, the Chinese began a major offensive against the United Nations Forces. The Chinese immediately broke through the first line of defences, held by the 6th ROK Division. All that stood between the Chinese army and the South Korean capital of Seoul was 2 PPCLI, Third Battalion Royal Australian Regiment and A Company 72nd US Heavy Tank Regiment. All three units were tasked to defend the Kapyong Valley. The Chinese attacked in overwhelming force and eventually managed to push the Australians off their position. Second Battalion was then cut-off but held off the Chinese forces and by doing so saved Seoul and countless UN lives. In recognition of “outstanding heroism and exceptionally meritorious conduct,” a United States Presidential Unit Citation was awarded to Second Battalion, the Australians and the American tank company for their actions at Kapyong on 24-25 April 1951.