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History of Rome

§21.55.1-21.55.11

The Battle of the Trebia and Mago's Ambush

Hannibal, leading his well-rested army, confronts the Roman forces who had crossed the Trebia River, overwhelming them with his cavalry, elephants, and Mago's ambush from behind. Despite the dire situation, the Roman light-armed soldiers fight bravely by targeting the weak spots of the elephants.

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§21.55.1

​Hannibalis interim miles ignibus ante tentoria factis oleoque per manipulos, ut mollirent artus, misso et cibo per otium capto, ubi transgressos flumen hostis nuntiatum est,1 alacer animis corporibusque arma capit atque in aciem procedit.

​Meanwhile, Hannibal’s soldiers, having lit fires before their tents, and oil having been distributed through the maniples to soften their limbs, and having taken food at their leisure, as soon as it was reported that the enemy had crossed the river, with minds and bodies full of vigor, took up their arms and advanced into line of battle.

§21.55.2

​Baliares locat ante signa levemque aliam armaturam, octo ferme milia hominum, dein graviorem armis peditem, quod virium, quod roboris erat;2 in cornibus circumfudit decem milia equitum, et ab cornibus in utramque partem divisos elephantos statuit.

​He placed the Baleares and other light-armed troops, about eight thousand men, in front of the standards; then the heavier-armed infantry, which was the main strength and vigor of his army; on the wings he stationed ten thousand cavalry, and on both sides, dividing them from the wings, he placed the elephants.

§21.55.3

​consul effuse sequentis equites, cum ab resistentibus subito Numidis incauti exciperentur, signo receptui dato revocatos circumdedit peditibus.

​The consul, when his cavalry, which were pursuing in a scattered manner, were suddenly surprised off their guard by the resisting Numidians, gave the signal for retreat and, having recalled them, placed them around the infantry.

§21.55.4

​duodeviginti milia Romana erant, socium nominis Latini viginti, auxilia praeterea Cenomanorum; ea sola in fide manserat Gallica gens. iis copiis concursum est.

​There were eighteen thousand Romans, twenty thousand of the allies of the Latin name, and besides, the auxiliary troops of the Cenomani; this was the only Gallic tribe that had remained faithful. With these forces the conflict began.

§21.55.5

​proelium a Baliaribus ortum est; quibus cum maiore robore legiones obsisterent, diducta propere in cornua levis armatura est, quae res effecit, ut equitatus Romanus extemplo urgeretur.3

​The battle was begun by the Baleares; and when the legions opposed them with greater strength, the light-armed troops were quickly drawn off to the wings, a movement which caused the Roman cavalry to be immediately hard pressed.

§21.55.6

​nam cum vix iam per se resisterent decem milibus equitum quattuor milia et fessi integris plerisque, obruti sunt insuper velut nube iaculorum a Baliaribus coniecta.

​For while four thousand cavalry could scarcely by themselves resist ten thousand, and they being fatigued against those who were mostly fresh, they were moreover overwhelmed by what was like a cloud of javelins thrown by the Baleares.

§21.55.7

​ad hoc elephanti eminentes ab extremis cornibus, equis maxime non visu modo sed odore insolito territis, fugam late faciebant.

​In addition to this, the elephants, towering up at the extremities of the wings, and terrifying the horses especially, not only by their appearance but also by their unaccustomed smell, caused a widespread flight.

§21.55.8

​pedestris pugna par animis magis quam viribus erat, quas recentis Poenus paulo ante curatis corporibus in proelium attulerat; contra ieiuna fessaque corpora Romanis et rigentia gelu torpebant. restitissent tamen animis, si cum pedite solum foret pugnatum;4

​The infantry fight was equal in spirit rather than in strength, which the Carthaginians, fresh and having recently refreshed their bodies, had brought into the battle; on the other hand, the bodies of the Romans, fasting and fatigued, and stiff with cold, were benumbed. They would, however, have resisted by their courage, if the fight had been with the infantry alone;

§21.55.9

​sed et Baleares pulso equite iaculabantur in latera et elephanti iam in mediam peditum aciem sese intulerant et Mago Numidaeque, simul latebras eorum inprovida praeterlata acies est, exorti ab tergo ingentem tumultum ac terrorem fecere.

​but both the Baleares, having repulsed the cavalry, were throwing javelins at their flanks, and the elephants had already forced themselves into the center of the infantry line, and Mago and the Numidians, as soon as the Roman line had inattentively passed by their ambush, rising up from behind, caused immense confusion and terror.

§21.55.10

​tamen in tot circumstantibus malis mansit aliquamdiu immota acies, maxime praeter spem omnium adversus elephantos.

​Yet, in the midst of so many surrounding evils, the line remained for some time unmoved, especially, beyond the expectation of all, against the elephants.

§21.55.11

​eos velites ad id ipsum locati verutis coniectis et avertere et insecuti aversos sub caudis, qua maxume molli cute vulnera accipiunt, fodiebant.5

​The light-armed darter, stationed for this very purpose, by throwing their javelins both turned them away, and pursuing them as they turned, stabbed them under their tails, where they receive wounds most easily because the skin is thinnest.

Syntax notes5 items
  1. 21.55.1transgressos flumen hostis nuntiatum est

    Meaning 'it was reported that the enemy had crossed the river.' Here transgressos is the accusative plural of the perfect participle, forming an accusative with infinitive (AcI) construction with the omission of esse (transgressos esse). hostis is an archaic spelling for the accusative plural hostes, acting as the subject accusative. The whole clause serves as the subject of the impersonal nuntiatum est.

  2. 21.55.2quod virium, quod roboris erat

    The relative pronoun quod (neuter singular) refers to the preceding peditem (infantry) and takes the partitive genitives virium and roboris. Literally 'what there was of strength, what there was of vigor,' meaning 'all the strength and vigor he possessed,' emphasizing the quality of the heavy infantry.

  3. 21.55.5quae res effecit, ut equitatus Romanus extemplo urgeretur

    Connection of relative. quae res refers to the entire preceding clause (the withdrawal of the light-armed troops to the wings) as its antecedent, meaning 'and this circumstance.' effecit governs a consecutive ut clause with the imperfect subjunctive urgeretur, forming the construction 'brought it about that...' or 'caused... to...'.

  4. 21.55.8restitissent tamen animis, si cum pedite solum foret pugnatum

    A conditional sentence contrary to fact in the past. The apodosis restitissent (third-person plural pluperfect subjunctive) corresponds to the protasis si ... foret pugnatum (also pluperfect subjunctive). foret is an alternative form of esset, and pugnatum esset is the impersonal passive of the intransitive verb pugnare, meaning 'if the battle had been fought.'

  5. 21.55.11et avertere et ... fodiebant

    avertere is not a present infinitive, but an archaic or poetic third-person plural perfect active indicative (alternative for averterunt). It is coordinated with the imperfect fodiebant, vividly describing a succession of rapid action followed by a continuous assault (mix of historical perfect and imperfect).

Translated by Gemini 3.5 Flash (published 2026-05-25)urn:cts:latinLit:phi0914.phi001.humanitext-lat2:21.55.1-21.55.11