Complex sentence: Yossrian becomes increasingly disatifyed and after witnessing many of his friends being killed such as Natley, and Orr 2 of his best friends after flying 71 missions Yossrian simply refuses to fly any more and has lost all faith.
Split into simpler sentences: Yossrian becomes increasingly disatifyed and after witnessing many of his friends being killed such as Natley, and Orr; 2 of his best friends. After flying 71 missions Yossrian simply refuses to fly any more and has lost all faith.