Celebrities That Served In the Military Before Making It Big

JRR Tolkien 

After getting married to his wife, Edith, World War I began. Tolkien opted to delay his enlistment to finish his degree, which angered his and Edith's families. He once wrote to his son, "In those days chaps joined up, or were scorned publicly. It was a nasty cleft to be in for a young man with too much imagination and little physical courage." Tolkien has publicly spoken about his distaste for being there.