#AlexanderTheGreat, so-called, defeated #DariusIII, and the #Achaemenid #PersianEmpire, in the #BattleOfGaugamela on #ThisDayInHistory in 331 BCE. Alexander got lucky when the #Persian cavalry rushed to loot his supply train rather than attacking his exposed #phalanx from behind.

⚔️ #OTD in #History 1 October 331 BC, #AlexanderTheGreat and his army completed their conquest of the Achaemenid Empire by defeating #DariusIII and his army at the #BattleOfGaugamela, despite the Persians being numerically superior and having chosen the ground.