[519] Cp. iv. [28], [33], [35].
[520] Adiutrix.
[521] Before this Cerialis had five legions, I, IV, XVI, XXI, and XXII, but of these only XXI was in full force, so these new reinforcements may have doubled his army. The auxiliaries had been called out by Hordeonius Flaccus (iv. [24]).
[522] Perhaps 'in wedge-formation' (see note [283]).
[524] Bructeri, Tencteri, &c. (cp. iv. [23]).
[527] They had been newly enrolled (see iv. [68]).
[528] i.e. the Roman army of occupation which had joined the Gauls and come over again.