Reinforcements from Spain
On the part of Carthage as much had hitherto been done in support of her general in Italy as could be expected. Phoenician squadrons threatened the coasts of Italy and of the Roman islands and guarded Africa from a Roman landing, and there the matter ended. More substantial assistance was prevented not so much by the uncertainty as to where Hannibal was to be found and the want of a port of disembarkation in Italy, as by the fact that for many years the Spanish army had been accustomed to be self-sustaining, and above all by the murmurs of the peace party. Hannibal severely felt the consequences of this unpardonable inaction; in spite of all his saving of his money and of the soldiers whom he had brought with him, his chests were gradually emptied, the pay fell into arrear, and the ranks of his veterans began to thin. But now the news of the victory of Cannae reduced even the factious opposition at home to silence. The Carthaginian senate resolved to place at the disposal of the general considerable assistance in money and men, partly from Africa, partly from Spain, including 4000 Numidian horse and 40 elephants, and to prosecute the war with energy in Spain as well as in Italy.
Alliance between Carthage and Macedonia
The long-discussed offensive alliance between Carthage and Macedonia had been delayed, first by the sudden death of Antigonus, and then by the indecision of his successor Philip and the unseasonable war waged by him and his Hellenic allies against the Aetolians (534-537). It was only now, after the battle of Cannae, that Demetrius of Pharos found Philip disposed to listen to his proposal to cede to Macedonia his Illyrian possessions—which it was necessary, no doubt, to wrest in the first place from the Romans—and it was only now that the court of Pella came to terms with Carthage. Macedonia undertook to land an invading army on the east coast of Italy, in return for which she received an assurance that the Roman possessions in Epirus should be restored to her.