Lieutenant Baker was a generic name for a number of minor nurse characters in the M*A*S*H TV series. Like Nurse Able and Nurse Charlie, the name Baker was derived from the phonetic alphabet used by the US Army in the 1950s before it was changed to "Alpha, Bravo, Charlie" later. Nurse Baker characters occur in every Season from Cowboy in Season 1 to the very last episode, the 3 hour long film “Goodbye, Farewell, and Amen” at the end of Season 11.