Complex sentence: The Parrot's Beak, an area in Cambodia only 30 miles from Saigon, was prepared as a base of operations, and funeral processions were used to smuggle weapons into Saigon.
Split into simpler sentences: The Parrot's Beak, an area in Cambodia only 30 miles from Saigon, was prepared as a base of operations. Funeral processions were used to smuggle weapons into Saigon.