The Arameans were later conquered by the Achaemenid Empire (539–332 BCE). However, little changed from the Neo-Assyrian and Neo-Babylonian times, as the Persians, seeing themselves as successors of previous empires, maintained Imperial Aramaic language as the main language of public life and administration.
Nabonidus fled to Borsippa, and on 12 October, after Cyrus' engineers had diverted the waters of the Euphrates, the soldiers of Cyrus entered Babylon without the need for a battle. Nabonidus surrendered and was deported. Gutian guards were placed at the gates of the great temple of Marduk, where the services continued without interruption.