battle of gaugamela

Technically it's not "Pyrrhic" because Pyrrhus isn't even born yet and will probably be butterflied away with this POD, but what would be the implications if Alexander the Great still won at Gaugamela, but instead of having his army relatively intact, he suffers heavy casualties due to the left...

In 331 BC, during the battle of Gaugamela, Alexander had successfully drawn much of the Achaemenid Cavalry to the flanks, allowing him to strike a blow at Darius III himself. Alexander then quickly overran his personal bodyguard, causing Darius III to panic and flee. Alexander apparently threw a...