The Battle of Sacra I was the last battle of the Wars of the Diadochi, fought on November 19, 2419. It was fought between the forces of Alexandra I Nicator, the founder and 1st Empress of the Arachosian Empire, and Athanasius I the Energetic, founder and Emperor of the Fel Dynasty. They were by this point the last surviving Diadochi. Alexandra's dominion, Arachosia, comprised virtually all of the Beta Quadrant, as well as most of the Alpha Quadrant and the greater part of the Delta Quadrant, while the Empire of Athanasius comprised much of the Gamma and Delta Quadrants. Alexandra and Athanasius had been allies decades earlier, fighting together to defeat Antigonus I the Old, who had been killed at the Battle of Borgia 009 in 2399. By this point however, tensions between the two former alli