tii, a Gallic tribe[138] once famous as fighting men and still
distinguished by the memory of their past, having heard nothing of
Galba's murder, refused to acknowledge the authority of Vitellius.
This exasperated Caecina's headstrong nature. Hostilities broke out
owing to the greed and impatience of the Twenty-first legion, who had
seized a sum of money which was being sent to pay the garrison of a
fort in which the Helvetii used to keep native troops at their own
expense.[139] The Helvetii, highly indignant at this, intercepted a
dispatch from the German army to the Pannonian legions, and kept a
centurion and some men in custody. Greedy for battle, Caecina hastened
to take immediate vengeance without giving them time for second
thoughts. Promptly breaking up his camp, he proceeded to harry the
country, and sacked a charming and much-frequented watering-place,[140]
which had grown during the long peace into the size and importance of
a town. Instructions were sent to the Raetian auxiliaries to attack
the Helvetii in the rear, while their attention was occupied with the
legion.

Full of spirit beforehand, the Helvetii were terrified in the face 68
of danger. At the first alarm they had chosen Claudius Severus
general, but they knew nothing of fighting or discipline and were
incapable of combined action. An engagement with the Roman veterans
would be disastrous; and the walls, dilapidated by time, could not
stand a siege. They found themselves between Caecina and his powerful
army on the one side, and on the other the Raetian auxiliaries, both
horse and foot, and the whole fighting force of Raetia as well,
trained soldiers well used to fighting.[141] Their country was given
over to plunder and massacre. Flinging away their arms, they wandered
miserably between two fires. Wounded and scattered, most of them took
refuge on the Boetzberg.[142] But some Thracian auxiliaries were
promptly sent to dislodge them. The German army, aided by the
Raetians, pursued them through the woods, and cut them to pieces in
their hiding-places. Many thousands were killed and many sold as
slaves. Having completed the work of destruction, the army advanced in
hostile array against Aventicum,[143] their capital town, and were met
by envoys offering surrender. The offer was accepted. Caecina executed
Julius Alpinus, one of their chief men, as the prime instigator of the
revolt. The rest he left to experience the clemency or cruelty of
Vitel