Plutarch Galba 18

[1] After this, even the reasonable measures of the emperor fell under censure, as, for instance, his treatment of the Gauls who had conspired with Vindex. For they were thought to have obtained their remission of tribute and their civil rights, not through the kindness of the emperor, but by purchase from Vinius.

[2] Such were the reasons, then, why most of the people hated the government; but the soldiers, though they had not received their promised largess, were led on at first by the hope that Galba would give them, if not the whole of it, at least as much as Nero had given. When, however, Galba heard that they were complaining, he spoke out as became a great emperor, and declared that it was his custom to enroll soldiers, not to buy them; whereupon they began to cherish a dire and savage hatred towards him. For they thought that he was not only defrauding them himself, but laying down the law and giving instructions for succeeding emperors.

[3]
  But the agitation at Rome was still smouldering, and at the same time a certain respect for Galba’s presence blunted and delayed the spirit of revolution, and the absence of any manifest occasion for a change repressed and kept under cover, somehow or other, the resentment of the soldiers. But the army which had formerly served under Verginius, and was now serving under Flaccus in Germany, thinking themselves deserving of great rewards on account of the battle they had fought against Vindex, and getting nothing, could not be appeased by their officers.

[4] Of Flaccus himself, who was physically incapacitated by an acute gout, and inexperienced in the conduct of affairs, they made no account whatever. And once at a spectacle, when the military tribunes and centurions, after the Roman custom, invoked health and happiness upon the emperor Galba, the mass of the soldiery raised a storm of dissent at first, and then, when the officers persisted in their invocation, cried out in response, If he deserves it.