The Battle of Gaugamela (GAW-gə-MEE-lə; Ancient Greek: Γαυγάμηλα, romanized: Gaugámēla, lit. 'the Camel's House'), also called the Battle of Arbela (Ἄρβηλα, Árbēla), took place in 331 BC between the forces of the Army of Macedon under Alexander the Great and the Persian Army under King Darius III. It was the second and final battle between the two kings, and is considered to be the final blow to the Achaemenid Empire, resulting in its complete conquest by Alexander. The fighting took place in Gaugamela, a village on the banks of the river Bumodus, north of Arbela (modern-day Erbil, in Iraqi Kurdistan). Despite being heavily outnumbered, the Army of Macedon emerged victorious due to the employment of superior tactics and the clever usage of light infantry forces.

Key figuresPhilip II of MacedonTheodoric the GreatAlfred the GreatOtto I the GreatAbbas the Great