The final and decisive victory of Alexander the Great over his Persian enemy Darius III. The latter fled to Bactria while Alexander occupied the Persian capitals and acquired their inestimable treasures.
Bouchard, Elsa. "Battle of Gaugamela". The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11286, accessed 22 December 2014.]