Complex sentence: Commander Scott Waddle, who commanded "Greeneville" during the collision, accepted full responsibility for the incident, and was reprimanded, but Navy Officials decided against a court-martial and let him retire honorably with his rank and pension intact.
Split into simpler sentences: Commander Scott Waddle, who commanded "Greeneville" during the collision, accepted full responsibility for the incident. Waddle was reprimanded, but Navy officials decided against a court-martial and let him retire honorably with his rank and pension intact.