After their defeat at Thermopylae the Gauls retreated Escaping out of Greece and moved Motion through Thrace and finally into Asia .

When an army of Gauls under the command Control of Cerethrius appeared Presence , Antigonus laid Giving an ambush Attack .

The Gauls looted Robbery the camp , but when they started Process_start to attack Attack the ships , Antigonus 's army appeared Presence , trapping them with the sea to their rear .

While militarily just as strong as the Romans , the internal division between the Gallic tribes helped ease Cause_change_of_position_on_a_scale victory for Caesar , and Vercingetorix 's attempt to unite Cause_to_amalgamate the Gauls against Roman invasion came too late .