Complex sentence: PFC George B. Turner was educated at Wentworth Military Academy in Lexington, Missouri and joined the Marine Corps in the First World War, but the war ended before he got overseas to join in the fighting.
Split into simpler sentences: PFC George B. Turner was educated at Wentworth Military Academy in Lexington, Missouri. He joined the Marine Corps in the First World War, but the war ended before he was able to go overseas to join in the fighting.