It was the fall of the year 218 before the birth of Christ and the Roman army which was to attack the Carthaginians in Spain had left Italy. People were eagerly waiting for news of an easy and complete victory when a terrible rumour began to spread through the plain of the Po. Wild mountaineers, their lips trembling with fear, told of hundreds of thousands of brown men accompanied by strange beasts "each one as big as a house," who had suddenly emerged from the clouds of snow which surrounded the old Graian pass through which Hercules, thousands of years before, had driven the oxen of Geryon on his way from Spain to Greece. Soon an endless stream of bedraggled refugees appeared before the gates of Rome, with more complete details. Hannibal, the son of Hamilcar, with fifty thousand soldiers, nine thousand horsemen and thirty-seven fighting elephants, had crossed the Pyrenees. He had defeated the Roman army of Scipio on the banks of the Rhone and he had guided his army safely across the mountain passes of the Alps although it was October and the roads were thickly covered with snow and ice. Then he had joined forces with the Gauls and together they had defeated a second Roman army just before they crossed the Trebia and laid siege to Placentia, the northern terminus of the road which connected Rome with the province of the Alpine districts. The Senate, surprised but calm and energetic as usual, hushed up the news of these many defeats and sent two fresh armies to stop the invader. Hannibal managed to surprise these troops on a narrow road along the shores of the Trasimene Lake and there he killed all the Roman officers and most of their men. This time there was a panic among the people of Rome, but the Senate kept its nerve. A third army was organised and the command was given to Quintus Fabius Maximus with full power to act "as was necessary to save the state." Fabius knew that he must be very careful lest all be lost. His raw and untrained men, the last available soldiers, were no match for Hannibal's veterans. He refused to accept battle but forever he followed Hannibal, destroyed everything eatable, destroyed the roads, attacked small detachments and generally weakened the morale of the Carthaginian troops by a most distressing and annoying form of guerilla warfare. Such methods however did not satisfy the fearsome crowds who had found safety behind the walls of Rome. They wanted "action." Something must be done and must be done quickly. A popular hero by the name of Varro, the sort of man who went about the city telling everybody how much better he could do things than slow old Fabius, the "Delayer," was made commander-in-chief by popular acclamation. At the battle of Cannae (216) he suffered the most terrible defeat of Roman history. More than seventy thousand men were killed. Hannibal was master of all Italy.