The mutiny was a serious one, not so well organized as the simultaneous mutiny on the Rhine, and not so ambitious in its aims; but the facts as given us ascribe a strange childishness to the Roman legionary. The story of the eclipse is hard to swallow, but there is other evidence to the superstitious character of the legionary; his commanders owed their authority largely to a certain religious awe with which they were surrounded; the standards were worshipped, and the Roman soldier, afraid of little else, was supremely afraid of breaking his military oath.

The mutiny on the Rhine was of a more serious character; not only was the number of legions implicated far larger, more than double that of the Pannonian legions, but the ambition of the mutineers was not confined to obtaining a redress of grievances; they proposed to annex the Empire. “The State is in our hands,” they said; “it is increased by our victories; the Emperor takes his title from his armies.” A vision of plundering Gaul, marching upon Rome, and setting up an Emperor of their own, floated before the eyes of the ringleaders. On the Rhine, as in Pannonia, the agitation was engineered by the recruits, chiefly enfranchized slaves recently drawn from the capital. The men who had fought under Drusus and Tiberius were hardly conscious of their own grievances; military discipline had numbed their intelligence; they knew of nothing else, and they were well content to exchange the peaceful but laborious routine of the camp for the hardships of campaigns among the forests and morasses of Germany, where the enemy was less terrible than the gloom of primeval trees and the treachery of bogs and estuaries. They were, however, only too willing to listen when cleverer men than themselves told them they had grievances. The fidelity of the most loyal troops and of the most trusted servants can seldom long resist the voice of the tempter, who deplores the injustice with which they are treated. The idlers of Rome, swept into the ranks from the street corners and the open air amusements of the great city, awoke from dreams of plunder and licence to the stern realities of the centurion’s stick and the heavy fatigue of a Roman camp. They had no fighting, but they had drill, and digging and building in plenty; few of them had ever before done an honest stroke of work. To the veterans, life on the frontier had become somewhat dull, and though they would quickly have discovered the worthlessness of their new associates on active service, they could not resist the fascinations of jokes and stories and songs picked up from the professional buffoons of the Roman theatres.

There were two armies on the Rhine frontier: the Lower Army, under Aulus Cæcina, quartered between the region of the Lippe and the neighbourhood of Cologne, the Upper Army, under Silius, about the gorge of the Rhine. The mutiny broke out in the Lower Army; the Upper Army waited to see the result before moving on its own account. Germanicus, as proconsul, was at the time conducting the census of Gaul in the regions of the Meuse and Moselle. Fortunately, the lower army was divided; it was composed of four legions, the twenty-first, the fifth, the first, and the twentieth; the two former began the mutiny. Cæcina was with them when it broke out.

The scenes of the Pannonian mutiny were repeated. Centurions were beaten and killed, Cæcina was powerless to interpose, and in fact seems at first to have lost his head. He surrendered to the soldiers a centurion who had taken refuge at his tribunal. Another centurion at the same time fought his way through the mob; he was Cassius Chærea, destined some twenty years later to rid Rome of Caligula. Rejecting the authority of their officers, the mutineers took the whole organization of the camp into their own hands; there was no suspension of discipline, but perfect order, a fact which increased the gravity of the situation as indicating a settled purpose and skilled ringleaders.

Germanicus left his civil duties to repress the mutineers if possible. He was received sullenly in the camp. Some of the men, seizing his hand under the pretext of kissing it, pressed his fingers into their mouths that he might feel the absence of their teeth; others pointed at their limbs bent with old age.

Germanicus on this occasion, as at the few other times when we get a fair view of him, showed himself a man of courage, resource, and strict uprightness. Before addressing the mutineers, he insisted that they should group themselves in the customary divisions, company by company, battalion by battalion, hoping thus to restore the habit of obedience, but he was disappointed. His first question as to the causes of the mutiny raised a storm. Men stripped to show the scars of wounds, the weals raised by the centurions’ sticks; eager protests were shouted against the prices paid for discharges, the smallness of the pay; the different labours of the camp were mentioned in detail, the digging of fortifications, the collection of fodder, timber, firewood. The most serious outcry was that of the veterans demanding immediate discharge; the immediate payment of the legacy of Augustus was also demanded, and then voices were heard offering to follow Germanicus if he would claim the Empire.

Germanicus at once jumped from his seat and left the tribunal. The soldiers endeavoured to force him back, whereupon he drew his sword and threatened to drive it into his own heart; a wag of the camp offered him his own sword with the observation that it was sharper. Germanicus was hurried off by his friends into his tent, and a consultation was held. Seeing that the fidelity of the Upper Army was insecure, the danger was such that Germanicus decided to yield; a letter was drawn up in the name of the Emperor granting a full discharge to men who had served for twenty years; men who had served for sixteen years were to be put on the reserve of “flagmen” for another four years; the legacy of Augustus was to be paid and doubled.

The soldiers demanded an immediate fulfilment of the terms of the letter, and the tribunes at once set to work to draw up the discharges in authorized form; the payment of the legacies was to be deferred till the winter. This, however, did not satisfy the soldiers of the fifth and twenty-first legions, who insisted on immediate payment, which was met by the private resources of Germanicus and his friends. The first and twentieth then asserted their own claims, and were marched back to their quarters near Cologne, under Cæcina, carrying the treasure chests of their commander-in-chief between the standards. Germanicus then went to the upper army and renewed the military oath of the second, thirteenth, and seventeenth legions without any opposition; the fourteenth legion showed signs of wavering, and was at once offered the discharges and the money.

The beginnings of a mutiny among the “flagmen” who were settled on the Lippe were summarily repressed by the prefect of the camp, who illegally but wisely executed two of the ringleaders.

Germanicus returned from the Upper Army to Cologne, where the recently mutinous legions were quartered, and there received the deputation who had arrived from Rome with the answer to his report. The soldiers, without waiting to hear the message of the deputation, assumed that it was unfavourable, and again broke out into mutiny; they attacked and insulted Plancus, who had come from Rome at the head of the deputation, and he was with difficulty rescued by Germanicus, and sent away under an escort of Gallic cavalry.