Xerxes' return to Sardes after Salamis was not a flight, but was due to a fresh revolt of Babylon, where one Shamash-erba had assumed the crown, with the full royal title of King of Babylon and King of the Lands; from Sardes Xerxes could keep touch both with Babylon and Mardonius. Babylon's final revolt was easily suppressed, and Xerxes now deprived the city of her exceptional position in the empi...