Original sentence: He attained the rank of rear admiral in 1994, and vice admiral in 2003.He was appointed the commander of the PLA Navy in 2007 and was promoted to general on June 20, 2007
Edited sentence: He attained the rank of Rear Admiral in 1994, and Vice Admiral in 2003.He was appointed the Commander of the PLA Navy in 2007 and was promoted to Admiral on June 20, 2007