section_path: Rise and military campaigns/Eastern Campaigns
section_name: Eastern Campaigns
paragraph_text: Eastern Campaigns
  
  After the conquest of Lydia, Cyrus campaigned in the east between around 545 BC to 540 BC. Cyrus first tried to conquer Gedrosia, however he was decisively defeated and departed Gedrosia. Gedrosia was most likely conquered during the reign of Darius I. After the failed attempt to conquer Gedrosia, Cyrus attacked the regions of Bactria, Arachosia, Sogdia, Saka, Chorasmia, Margiana and other provinces in the east. In 533 BC, Cyrus the Great crossed the Hindu Kush mountains and collected tribute from the Indus cities. Thus, Cyrus probably had established vassal states in western India. Cyrus then returned with his army to Babylon due to the unrest taking place in and around Babylon.