Complex sentence: During World War I, he commanded the 3rd Battalion 5th Marines and participated in numerous battles in France, earning the Navy Cross, three Silver Stars, the Croix de guerre with palm, and the French Legion of Honour.
Split into simpler sentences: During World War I, he commanded the 3rd Battalion 5th Marines. He participated in numerous battles in France, earning him three Silver Stars, the Navy Cross, the Croix de guerre with palm, and the French Legion of Honour.