As the power of the kingdom of Palmyra rose, the ruins of which are in
what is now Syria, Vabalathus appropriated for himself the title of Augustus.
Behind him his mother Zenobia was the mastermind of a series of battles won
against various Roman detachments sent to depose this usurper. Aurelian finally
took command of the situation and feigned a truce while launching a concerted
attack against Egypt which was under Palmyra's control. When Egypt fell Palmyra
lost its valuable trade routes and it was then a simple matter to regain control
of the Syrian province. Both Vabalathus and Zenobia were captured and taken back
to Rome but it's not recorded whether they were executed.