Korean War(1950-53): Often called "the forgotten war," it finally had a memorial dedicated to it in Washington in 1995. Of the 5.7 million Americans who served, 2.7 million survive.
Lee Jin-man/AP
Robert Charles Cox, a Korean War veteran from Fenton, Missouri, salutes during the ceremony of the 61st anniversary of the recapture of Seoul during the Korean War at Korea War Memorial Museum in Seoul, South Korea, Sept. 28.