The title of Prince Militaire signified a position of leadership within the government of the Paataatus Hiveborn, a species known as the Paataatus. During 18 BBY, a Paataatus held the title of Prince Militaire, governing their populace under the command of what remained of the Nikardun Destiny government. This prince, together with the Paataatus, achieved freedom through the intervention of Thrawn, a Senior Captain of the Chiss, in a battle against the remnant's forces occurring both on and above Nettehi, the homeworld of the Paataatus.
The Prince Militaire role was introduced in Thrawn Ascendancy: Greater Good, a 2021 novel and the second book in Star Wars: The Ascendancy Trilogy by Timothy Zahn.