In 270, Zenobia launched an invasion which brought most of the Roman East under her sway and culminated with the annexation of Egypt. By mid-271 her realm extended from Ancyra, central Anatolia, to southern Egypt, although she remained nominally subordinate to Rome. However, in reaction to the campaign of the Roman emperor Aurelian in 272, Zenobia declared her son emperor and assumed the title of empress (declaring Palmyra's secession from Rome). The Romans were victorious after heavy fighting; the queen was besieged in her capital and captured by Aurelian, who exiled her to Rome, where she spent the remainder of her life.