Duke

align="center" ! Titles of Nobility
Emperor / Empress
King / Queen
Archduke / Archduchess
Grand Duke / Grand Duchess
Prince / Princess
Duke / Duchess
Marquess / Marchioness
Count / Countess
Earl / Countess
Baron / Baroness
Baronet / Baronetess

A duke or a duchess is a usually the ruler or monarch of a Duchy, or a high-ranking member of the Nobility.

Dukes and Duchesses of the Realm

New Scania

• First Lord of the Admiralty, Admiral of the Fleet Lord Sir Martin A. Lessem, KSK, GCE, KCR, DSO, GS

New Arkangelsk

• First Space Lord, Fleet Admiral Lord Sir Scott A. Akers, KSK, KDE, KCR, SC, GS

New Ulyanovsk

• Commandant, Marshal of the Corps Lord Sir Sean Neimeyer, KSK, KDE, KCR, GS