Instead, they prepared a siege. They divided their forces into two. One division besieged the hill, and the other went foraging in the territories of the neighbouring cities because all the grain around Rome had been taken to Veii by the Roman soldiers who had fled there. Some Gauls arrived at Ardea, where Marcus Furius Camillus, a great Roman military commander who had seized Veii a few years earlier, had gone when he was exiled because of accusations of embezzlement. Camillus rallied the people of Ardea to fight. He marched at night, caught the camp of the Gauls by surprise, and massacred the enemy in their sleep. Some Gallic fugitives got near Antium and were surrounded by its townsmen.