Complex sentence: After serving in World War II and in the Korean War, he studied fine arts at the Columbus Gallery of Art in Chicago (now Columbia College Chicago), and became the first African-American man to win the 47th annual group exhibition award.
Split into simpler sentences: After serving in World War II and in the Korean War, he studied at the Columbus Gallery of Art in Chicago (now Columbia College Chicago). There he studied fine arts and became the first African American man to win the forty-seventh annual group exhibition award.