I originally heard of this game in a thread at Dwarf Fortress forum, bay12games.com.
The thread about Aurora there, in the "other games" section, which has more than 200 pages, calls Aurora "The Dwarf Fortress of 4X games".
There seems to be quite a crossover between playerbases for the two games, judging to the lenght of that thread.
Therefore, I would like to suggest a new commander theme: "Dwarf Fortress"
[b]Naval ranks:[/b]
King
Duke
Count
Baron
Mayor
Captain of the Guard
Militia Commander
Militia Captain
Fortress Guard
Soldier
Recruit
Soapmaker
[b]Army ranks:[/b]
Legendary
Grand Master
High Master
Master
Professional
Adept
Novice
Peasant
As for unit name Theme, I suppose it's possible to have DF's Random Name generator churn out a couple of thousands of dwarven names if required.