In his Roman History, the Roman officer-historian Velleius Paterculus (20 BCE - after 30 CE) has included a description of the battle in the Teutoburg Forest (September 9 CE). The author was active in the Germanic wars and knew many of the actors personally. His account is the oldest surviving description of the battle and relies on eyewitness accounts; the battlefield has been discovered at Kalkriese.
Book 2, chapters 117-120, of Paterculus' Roman History are presented here in the translation by F.W. Shipley.
[2.117.2] Varus Quintilius, descended from a famous rather than a high-born family, was a man of mild character and of a quiet disposition, somewhat slow in mind as he was in body, and more accustomed to the leisure of the camp than to actual service in war. That he was no despiser of money is demonstrated by his governorship of Syria: he entered the rich province a poor man, but left it a rich man and the province poor.
[2.117.4] With this purpose in mind he entered the heart of Germanianote[In the year 6.] as though he were going among a people enjoying the blessings of peace, and sitting on his tribunal he wasted the time of a summer campaign in holding court and observing the proper details of legal procedure.
[2.118.1] But the Germans, who with their great ferocity combine great craft, to an extent scarcely credible to one who has had no experience with them, and are a race to lying born, by trumping up a series of fictitious lawsuits, now provoking one another to disputes, and now expressing their gratitude that Roman justice was settling these disputes, that their own barbarous nature was being softened down by this new and hitherto unknown method, and that quarrels which were usually settled by arms were now being ended by law, brought Quintilius to such a complete degree of negligence, that he came to look upon himself as a city praetor administering justice in the forum, and not a general in command of an army in the heart of Germania.
[2.118.3] At first, then, he admitted but a few, later a large number, to a share in his design; he told them, and convinced them too, that the Romans could be crushed, added execution to resolve, and named a day for carrying out the plot.
[2.118.4] This was disclosed to Varus through Segestes, a loyal man of that race and of illustrious name, who also demanded that the conspirators be put in chains. But fate now dominated the plans of Varus and had blindfolded the eyes of his mind. Indeed, it is usually the case that heaven perverts the judgment of the man whose fortune it means to reverse, and brings it to pass - and this is the wretched part of it - that that which happens by chance seems to be deserved, and accident passes over into culpability. And so Quintilius refused to believe the story, and insisted upon judging the apparent friendship of the Germans toward him by the standard of his merit. And, after this first warning, there was no time left for a second.
[2.119.1] The details of this terrible calamity, the heaviest that had befallen the Romans on foreign soil since the disaster of Crassus in Parthia,note[A reference to the battle at Carrhae, where the Romans were defeated by the Parthian commander Surena, in 53 BCE.] I shall endeavor to set forth, as others have done, in my larger work. Here I can merely lament the disaster as a whole.
[2.119.3] The general had more courage to die than to fight, for, following the example of his father and grandfather, he ran himself through with his sword.
[2.119.4] Of the two prefects of the camp, Lucius Eggius furnished a precedent as noble as that of Ceionius was base, who, after the greater part of the army had perished, proposed its surrender, preferring to die by torture at the hands of the enemy than in battle. Vala Numonius, lieutenant of Varus, who, in the rest of his life, had been an inoffensive and an honorable man, also set a fearful example in that he left the infantry unprotected by the cavalry and in flight tried to reach the Rhine with his squadrons of horse. But fortune avenged his act, for he did not survive those whom he had abandoned, but died in the act of deserting them.
[2.119.5] The body of Varus, partially burned, was mangled by the enemy in their barbarity; his head was cut off and taken to Maroboduusnote[King of the Marcomanni, living in Bohemia.] and was sent by him to Caesar; but in spite of the disaster it was honored by burial in the tomb of his family.note[I.e., the tomb of the imperial family, the Mausoleum of Augustus.]
[2.120.2] He thus made aggressive war upon the enemy when his father and his country would have been content to let him hold them in check, he penetrated into the heart of the country, opened up military roads, devastated fields, burned houses, routed those who came against him, and, without loss to the troops with which he had crossed, he returned, covered with glory, to winter quarters.
[2.120.3] Due tribute should be paid to Lucius Asprenas, who was serving as lieutenant under Varus his uncle, and who, backed by the brave and energetic support of the two legions under his command,note[Lucius Nonius Asprenas, a relative of Varus, was the commander of the army of Germania Superior. His legions, I Germanica and V Alaudae, were stationed at Mainz.] saved his army from this great disaster, and by a quick descent to the quarters of the army in Germania Inferior strengthened the allegiance of the races even on the hither side of the Rhine who were beginning to waver. There are those, however, who believed that, though he had saved the lives of the living, he had appropriated to his own use the property of the dead who were slain with Varus, and that inheritances of the slaughtered army were claimed by him at pleasure.
[2.120.5] From all this it is evident that Varus, who was, it must be confessed, a man of character and of good intentions, lost his life and his magnificent army more through lack of judgment in the commander than of valor in his soldiers.
[2.120.6] When the Germans were venting their rage upon their captives, an heroic act was performed by Caldus Caelius, a young man worthy in every way of his long line of ancestors, who, seizing a section of the chain with which he was bound, brought down with such force upon his own head as to cause his instant death, both his brains and his blood gushing from the wound.