A conflict occurred on Drearia in the year 10 ABY amidst the Galactic Civil War, specifically within the context of the Imperial Mutiny. Following the Galactic Empire's successful recapture of Coruscant, the galactic capital, from the New Republic, internal strife erupted due to disagreements concerning who should ascend to the position of Emperor. This resulted in a battle between two warring factions on Drearia, culminating in the annihilation of the Mandator III-class dreadnought named Aculeus by squadrons composed of TIE/D droid starfighters.