as the weaker and continued to be so notwithstanding the
brilliant battle on the Trebia; he knew too that his ultimate object,
the humiliation of Rome, was not to be wrung from the unbending Roman
pride either by terror or by surprise, but could only be gained by
the actual subjugation of the haughty city. It was clearly apparent
that the Italian federation was in political solidity and in military
resources infinitely superior to an adversary, who received only
precarious and irregular support from home, and who in Italy was
dependent for primary aid solely on the vacillating and capricious
nation of the Celts; and that the Phoenician foot soldier was,
notwithstanding all the pains taken by Hannibal, far inferior in
point of tactics to the legionary, had been completely proved by
the defensive movements of Scipio and the brilliant retreat of the
defeated infantry on the Trebia. From this conviction flowed the two
fundamental principles which determined Hannibal's whole method of
operations in Italy--viz., that the war should be carried on, in
somewhat adventurous fashion, with constant changes in the plan and
in the theatre of operations; and that its favourable issue could
only be looked for as the result of political and not of military
successes--of the gradual loosening and final breaking up of the
Italian federation. That mode of carrying on the war was necessary,
because the single element which Hannibal had to throw into the scale
against so many disadvantages--his military genius--only told with
its full weight, when he constantly foiled his opponents by unexpected
combinations; he was undone, if the war became stationary. That aim
was the aim dictated to him by right policy, because, mighty conqueror
though he was in battle, he saw very clearly that on each occasion he
vanquished the generals and not the city, and that after each new
battle the Romans remained just as superior to the Carthaginians as
he was personally superior to the Roman commanders. That Hannibal
even at the height of his fortune never deceived himself on this
point, is worthier of admiration than his most admired battles.

Hannibal Crosses the Apennines

It was these motives, and not the entreaties of the Gauls that he
should spare their country--which would not have influenced him--that
induced Hannibal now to forsake, as it were, his newly acquired basis
of operations against Italy, and to transfer the scene of war to Italy
itself.