How Was Alexander Able to Supply His Army Deep Into Asia?

It's one thing to conquer the known world and beyond without the benefit of modern communications like Alexander the Great did. It's another thing to supply tens of thousands of soldiers deep into hostile territory when home is half a world away. How did Alexander manage to provision his army, and how did he do so for over a decade?   TO HELP OUT THE SHOW Leave an honest review on iTunes. Your ratings and reviews really help and I read each one. Subscribe on iTunes or Stitcher