"Mustang", originally describing a breed of wild horses on Old Earth, was an unofficial term used by members of military organizations. It described a former enlisted crewmember that had been given an officer's commission in recognition of exemplary conduct.
- Travis Long (MA1, HHA6.2: ACTA)
- Alfred Harrington (HHA6.3: BATB)
- George LeMoyne (HH7)
- Ginger Lewis (SI1)
- Article on Mustangs on Wikipedia