Junior officers represented the most basic level of operational commissioned officer positions within the military ranks structure. They were positioned beneath the senior officers found in the Starfleet of the Galactic Empire.
Despite holding significantly higher ranks like lieutenant or gunnery chief, the different First Order crew members serving on the Supremacy, a Mega-class Star Dreadnought, were conceptually related to this grouping. This connection arose because the military forces of the First Order included individuals who had undergone combat training from birth.