DARREN999
William (Bill) Anders was never on a Gemini flight.
He flew only once as Command Module Pilot of Apollo 8 in Decenber 1968 with Frank Borman and Jim Lovell.
Lovell credits him with taking the famous 'Earthrise' photo that you see so often.
Not sure why he never flew again as Deke Slaytons rotation would have had Anders on Apollo 11. Usually they were dropped for motion sickness (Borman, Rusty Swieckart suffered so) or for political reasons (Dave Scott suffered this fate).