The Board of Selectmen last Tuesday appointed Elisha Sullivan as a full-time police officer. Sullivan, who was appointed on the recommendation of Police Chief Michael Miksch, fills a vacancy resulting from a retirement. Sullivan has been a police officer since 2008, first as a part-time officer in Scituate, then as a full-time officer with the Boston Housing Authority Police – where she had the rank of acting sergeant – and then as a full-time officer for the Plympton Police. She has also worked as a teacher in the state Department of Youth Services’ detention system and as a science teacher at Scituate High School. Sullivan has a bachelor’s degree from Simmons College and is a graduate of the Plymouth Police Academy. A trained sexual assault investigator, she also has advanced training in boxing, the combat sport muay Thai, and mixed martial arts. Full story for BostonGlobe.com subscribers.