Complex sentence: In 1946, the University of Oklahoma hired a new head football coach, Jim Tatum, and he embarked on a recruiting strategy that consisted of luring returning veterans who had played for the school's rivals before the war.
Split into simpler sentences: In 1946, the University of Oklahoma hired a new head football coach, Jim Tatum. His recruiting strategy focused in part on luring to Oklahoma veterans who had played for the school's rivals before the war.