Campaigns and landmarks of Alexander invasion

Campaigns and landmarks of Alexander's invasion of the Indus River Basin of modern-day Pakistan.

After overrunning the Achaemenid Empire in 331 BCE, Alexander marched into present-day Afghanistan with an army of 50,000. His scribes do not record the names of the rulers of the Gandhara or Kamboja; rather, they locate a dozen small political units in those territories. This rules out the possibility of Gandhara and/or Kamboja] having been great kingdoms in the late 4th century BCE. In 326 BCE, most of the dozen-odd political units of the former Gandhara/Kamboja fell to Alexander's forces.