Complex sentence: In 1957, Stan attended Officer Candidate School (OCS) at Lackland AFB, TX, and was named a distinguished graduate in September 1957 and was commissioned as a 2nd Lieutenant.
Split into simpler sentences: In 1957, Stan attended Officer Candidate School (OCS) at Lackland AFB, TX. He was named a distinguished graduate in September 1957 and was commissioned as a 2nd Lieutenant.