The historical battle
Livius 'History of Rome' VOL.III 21.52-56
Between the two armies there was a stream with very
high banks which were overgrown with marshy grass and
the brambles and brushwood which are generally found on
waste ground. After riding round the place and
satisfying himself from personal observation that it was
capable of concealing even cavalry, Hannibal, turning to
his brother Mago, said, "This will be the place for you
to occupy. Pick out of our whole force of cavalry and
infantry a hundred men from each arm, and bring them to
me at the first watch, now it is time for food and
rest." He then dismissed his staff. Presently Mago
appeared with his 200 picked men. "I see here," said
Hannibal, "the very flower of my army, but you must be
strong in numbers as well as in courage. Each of you
therefore go and choose nine others like himself, from
the squadrons and the maniples. Mago will show you the
place where you are to lie in ambuscade, you have an
enemy who are blindly ignorant of these practices in
war."
After sending Mago with his 1000 infantry and 1000
cavalry to take up his position, Hannibal gave orders
for the Numidian cavalry to cross the Trebia in the
early dawn and ride up to the gates of the Roman camp;
then they were to discharge their missiles on the
outposts and so goad the enemy on to battle. When the
fighting had once started they were gradually to give
ground and draw their pursuers to their own side of the
river. These were the instructions to the Numidians; the
other commanders, both infantry and cavalry, were
ordered to see that all their men had breakfast, after
which they were to wait for the signal, the men fully
armed, the horses saddled and ready. Eager for battle,
and having already made up his mind to fight, Sempronius
led out the whole of his cavalry to meet the Numidian
attack, for it was in his cavalry that he placed most
confidence; these were followed by 6000 infantry and at
last the whole of his force marched on to the field. It
happened to be the season of winter, a snowstorm was
raging, and the district, situated between the Alps and
the Apennines, was rendered especially cold by the
vicinity of rivers and marshes. To make matters worse,
men and horses alike had been hurriedly sent forward,
without any food, without any protection against the
cold, so they had no heat in them and the chilling
blasts from the river made the cold still more severe as
they approached it in their pursuit of the Numidians.
But when they entered the water which had been swollen
by the night's rain and was then breast high, their
limbs became stiff with cold, and when they emerged on
the other side they had hardly strength to hold their
weapons; they began to grow faint from fatigue and as
the day wore on, from hunger.
Hannibal's men, meanwhile, had made fires in front of
their tents, oil had been distributed amongst the
maniples for them to make their joints and limbs supple
and they had time for an ample repast. When it was
announced that the enemy had crossed the river they took
their arms, feeling alert and active in mind and body,
and marched to battle. The Balearic and light-armed
infantry were posted in front of the standards; they
numbered about 8000; behind them the heavy-armed
infantry, the mainstay and backbone of the army; on the
flanks Hannibal distributed the cavalry, and outside
them, again, the elephants. When the consul saw his
cavalry, who had lost their order in the pursuit,
suddenly meeting with an unsuspected resistance from the
Numidians, he recalled them by signal and received them
within his infantry. There were 18,000 Romans, 20,000
Latin allies, and an auxiliary force of Cenomani, the
only Gallic tribe which had remained faithful. These
were the forces engaged. The Balearics and light
infantry opened the battle, but on being met by the
heavier legions they were rapidly withdrawn to the
wings, an evolution which at once threw the Roman horse
into difficulties, for the 4000 wearied troopers had
been unable to offer an effective resistance to 10,000
who were fresh and vigorous, and now in addition they
were overwhelmed by what seemed a cloud of missiles from
the light infantry. Moreover, the elephants, towering
aloft at the ends of the line, terrified the horses not
only by their appearance but by their unaccustomed
smell, and created widespread panic. The infantry
battle, as far as the Romans were concerned, was
maintained more by courage than by physical strength,
for the Carthaginians, who had shortly before been
getting themselves into trim, brought their powers fresh
and unimpaired into action, whilst the Romans were
fatigued and hungry and stiff with cold. Still, their
courage would have kept them up had it been only
infantry that they were fighting against. But the light
infantry, after repulsing the cavalry, were hurling
their missiles on the flanks of the legions; the
elephants had now come up against the centre of the
Roman line, and Mago and his Numidians, as soon as it
had passed their ambuscade, rose up in the rear and
created a terrible disorder and panic. Yet in spite of
all the dangers which surrounded them, the ranks stood
firm and immovable for some time, even, contrary to all
expectation, against the elephants. Some skirmishers who
had been placed where they could attack these animals
flung darts at them and drove them off, and rushed after
them, stabbing them under their tails, where the skin is
soft and easily penetrated.
Maddened with pain and terror, they were beginning to
rush wildly on their own men, when Hannibal ordered them
to be driven away to the left wing against the auxiliary
Gauls on the Roman right. There they instantly produced
unmistakable panic and flight, and the Romans had fresh
cause for .alarm when they saw their auxiliaries routed.
They now stood fighting in a square, and about 10,000 of
them, unable to escape in any other direction, forced
their way through the centre of the African troops and
the auxiliary Gauls who supported them and inflicted an
immense loss on the enemy. They were prevented by the
river from returning to their camp, and the rain made it
impossible for them to judge where they could best go to
the assistance of their comrades, so they marched away
straight to Placentia. Then desperate attempts to escape
were made on all sides; some who made for the river were
swept away by the current or caught by the enemy while
hesitating to cross; others, scattered over the fields
in flight, followed the track of the main retreat and
sought Placentia; others, fearing the enemy more than
the river, crossed it and reached their camp. The
driving sleet and the intolerable cold caused the death
of many men and baggage animals, and nearly all the
elephants perished. The Carthaginians stopped their
pursuit at the banks of the Trebia and returned to their
camp so benumbed with cold that they hardly felt any joy
in their victory.
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