Complex sentence: On April 10, the U.S. military declared a unilateral truce to allow for humanitarian supplies to enter Fallujah, and pulled troops back to the outskirts of the city.
Split into simpler sentences: On April 10, the U.S. military declared a unilateral truce to allow for humanitarian supplies to enter Fallujah. U.S. troops pulled back to the outskirts of the city.