Late 1950 in the Korean War saw the direct entry of China into the Korean War. North Korean forces along with huge numbers of Chinese reinforcements not only broke the United Nations advance but sent them reeling. American forces, who made up the most of the United Nations forces, started the longest retreat in U.S. military history. As UN forces retreated so to did Korean civilians, with thousands fleeing from the advancing communist forces. Near the North Korean capital of Pyongyang AP photographer Max Desfor took this picture on a freezing December day as Korean refugees struggled across the ruined bridge. The image went on to win the 1951 Pulitzer Prize for photography.