The Romans are thought to have managed matters very skilfully in this battle, their tribunes having instructed them how they should fight, both as individuals and collectively.
For they had observed from former battles that Gauls in general are most formidable and spirited in their first onslaught,
while still fresh, and that, from the way their swords are made, as has been already explained, only the first cut takes effect; after this they at once assume the shape of a , being so much bent both length-wise and side-wise that unless the men are given leisure to rest them on the ground and set them straight with the foot, the second blow is quite ineffectual.
The tribunes therefore distributed among the front lines the spears of the triarii who were stationed behind them, ordering them to use their swords instead only after the spears were done with.
They then drew up opposite the Celts in order of battle and engaged. Upon the <a class="linkToPlace" target="_blank" href="/place?placename=Gaul&groupId=598&placeId=1108">Gaul</a> slashing first at the spears and making their swords unserviceable the Romans came to closed quarters, having rendered the enemy helpless by depriving them of the power of raising their hands and cutting, which is the peculiar and only stroke of the Gauls, as their swords have no points.
The Romans, on the contrary, instead of slashing continued to thrust with their swords which did not bend, the points being very effective. Thus, striking one blow after another on the breast or face, they slew the greater part of their adversaries. This was solely due to the foresight of the tribunes,
the Consul Flaminius being thought to have mismanaged the battle by deploying his force at the very edge of the river-bank and thus rendering impossible a tactical movement peculiar to the Romans, as he left the lines no room to fall back gradually.
For had the troops been even in the slightest degree pushed back from their ground during the battle, they would have had to throw themselves into the river, all owing to their general's blunder.
However, as it was, they gained a decisive victory by their own skill and valour, as I said, and returned to <a class="linkToPlace" target="_blank" href="/place?placename=Rome&groupId=935&placeId=1669">Rome</a> with a quantity of booty and many trophies.
Walbank Commentary