Neo-Terran Imperium
From Tardis Wiki, the free Doctor Who reference
The Neo-Terran Imperium was an empire formed by at least the 450th century.
During this empire, it was decided that all humans would be designated a role in life from birth. This was done to ensure survival, as mankind, as claimed by the Fifteenth Doctor to Ruby Sunday, had had a couple of rough centuries before this empire.
Known roles were; Navitrix, Strategos and Tacticron. (GAME: Fragmented Cosmos [+]Loading...["Fragmented Cosmos (episode)"], In Loving Memory [+]Loading...["In Loving Memory (episode)"])