### Clue: Where those who serve may be served (5)
### Answer: NAAFI 
 ### Explanation: Definition: Where those who serve may be served
  Cryptic defn:  Abbrev. for $$N$$avy $$A$$rmy and $$A$$ir $$F$$orce $$I$$nstitutes, an organization that caters to,serves the recreational needs of British military forces,those who serve, around the world.  It runs clubs, bars, shops, supermarkets, restaurants, cafés and other facilities at British military bases.