Context : Richard L. Newhafer (March 6, 1921--October 12, 1974) was an American novelist, teleplay writer and television director whose experience as a highly decorated veteran of World War II and the Korean War played a key role in his books and in his contribution to ABC's 1960s series Combat! and Twelve O'Clock High. 
Question : Which war did Richard L. Newhafer serve in?
World War II