5.21.1Trinobantibus dēfēnsīs atque ab omnī mīlitum iniūriā prohibitīs Cenimagnī, Segontiacī, Ancalitēs, Bibrocī, Cassī lēgātiōnibus missīs sēsē Caesarī dēdunt.When the Trinobantes had been protected and kept safe from any harm by the soldiers, the Cenimagni, the Segontiaci, the Ancalites, the Bibroci and the Cassi sent embassies and surrendered to Caesar. 5.21.2Ab hīs cognōscit nōn longē ex eō locō oppidum Cassivellaunī abesse silvīs palūdibusque mūnītum, quō satis magnus hominum pecorisque numerus convēnerit.From them he learns that not far from there was the stronghold of Cassivellaunus, protected by woods and marshes, where a fairly large number of people and cattle had gathered. 5.21.3Oppidum autem Britannī vocant, cum silvās impedītās vallō atque fossā mūniērunt, quō incursiōnis hostium vītandae causā convenīre cōnsuērunt.The Britons call it a stronghold when they have fortified a thick wood with a rampart and a trench, where they usually gather to escape enemy raids.Note. Oppidum … vocant: 'they call it a stronghold'. A British oppidum was a fortified wood, not a town. 5.21.4Eō proficīscitur cum legiōnibus: locum reperit ēgregiē nātūrā atque opere mūnītum;He sets out there with the legions: he finds a place excellently protected by nature and by work; 5.21.4tamen hunc duābus ex partibus oppugnāre contendit.even so he hurries to attack it from two sides.
5.21.5Hostēs paulisper morātī mīlitum nostrōrum impetum nōn tulērunt sēsēque aliā ex parte oppidī ēiēcērunt.The enemy held out for a short time, but could not withstand the attack of our soldiers and rushed out of the stronghold on the other side. 5.21.6Magnus ibi numerus pecoris repertus, multīque in fugā sunt comprehēnsī atque interfectī.A great number of cattle was found there, and many were caught in flight and killed.