Complex sentence: When a posse investigated the scene of the shootout later that day, they found that all five of Bright's bullets had taken effect; both of the Mexicans had been hit between the waist and the shoulders.
Split into simpler sentences: When a posse investigated the scene of the shootout later that day, they found that all five of Bright's bullets had been effective. Both of the Mexicans had been hit between the waist and the shoulders.