 Officially, this invasion was presented as an effort to restore Ptolemy VI's position against his younger brother.Antiochus quickly occupied Memphis where he was crowned king of Egypt, and advanced on Alexandria.However, the Ptolemies had appealed to Rome for help over the winter and a Roman embassy led by Gaius Popillius Laenas confronted Antiochus at the town of Eleusis and forced him to agree to a settlement, bringing the war to an end.