Having beaten the Persians at Issus in 333 BC, Alexander the Great moved to secure his hold on Syria, the Mediterranean coast, and Egypt. Having completed these efforts, he again looked east with the goal of toppling Darius III's Persian Empire. Marching into Syria, Alexander crossed the Euphrates and Tigris without opposition in 331.
Desperate to halt the Macedonian advance, Darius scoured his empire for resources and men. Gathering them near Arbela, he chose a wide plain for the battlefield as he felt that it would facilitate the use of his chariots and elephants, as well as would allow his greater numbers to bear.
As with most battles from this period, casualties for Gaugamela are not known with any certainty though sources indicate that Macedonian losses may have been around 4,000 while Persian losses may have been as high as 47,000.
The presentation covers the following:
Setting the Stage
Battle Lines Drawn
The Battle of Gaugamela
Tide Turns Back
End of Presentation
This is one of several "companion" power point presentations that I offer on... Ancient Civilizations.