Complex sentence: After serving with the United States Navy during World War II, Salinger graduated from the University of San Francisco and worked as a reporter for "The San Francisco Chronicle" and as a contributing Editor to "Collier's" in the 1940s and 1950s.
Split into simpler sentences: After serving with the United States Navy during World War II, Salinger graduated from the University of San Francisco. Salinger then began his journalism career as a reporter for "The San Francisco Chronicle" and as a contributing Editor to "Collier's" in the 1940s and 1950s.