By Stan Wilson and Casey Wian, CNN
Los Angeles (CNN) - When Chang Soon Lee reflects on his childhood years in North Korea, his joy quickly turns to deep sadness. Like millions of Koreans caught in the middle of the Korean War in the early 1950s, Chang at the age of 15 was forced to flee his native homeland.
His father, a prominent minister who survived World War II, disappeared just days after communist-led forces invaded Pyongyang. "After the (World War II) liberation of Korea, my father often visited churches and preached but one day we waited for him and he never returned home," says Chang.
By the time an armistice halted the Korean War in 1953, nearly 37,000 U.S. troops had been killed and more than 400,000 North Koreans soldiers were dead, according to the U.S Department of Defense.
Chang eventually emigrated to the United States on a student visa and became a minister, co-founding a ministry for Korean immigrants at Wiltshire United Method Church in Los Angeles, home to the nation's largest Korean-American population.