Korean War photographer Duncan talks about his photograph (above) of a Marine captain near the Naktong River after an attack by North Korean troops — as ammunition ran dangerously low and reinforcements were nowhere in sight — Duncan wrote in his classic 1951 book, This Is War!: “Ike Fenton, drenched and with the rain running in little droplets from his bearded chin, got the news. His tattered Baker Company Marines had only those few rounds in their belts remaining. If the Reds were to launch one more attack they would have to be stopped with bayonets and rifle butts.”
But that attack never came. The Marines held the muddy, blasted, blood-drenched hill. “Radio communication was knocked out by the rain that day,” Duncan told LIFE.com, the recollection still obviously vivid more than six decades later, “and Fenton had to shout most of his orders and sent runners when shouting wouldn’t do. God, he was a cool one. He never lost his head.”
Wedged between the bloody battles of WWII and the controversial Vietnam War, the Korean War is referred to as “The Forgotten War,” despite its many causalities. Take our quiz to see how much you remember about this often overlooked conflict.