Whatever alarm they might feel at the indiscriminate fury of the hordes descending upon them, they smiled grimly at the panic which more justly seized the Romans. The guilty objects of national vengeance discovered the direst prodigies in every event around them. The wailings of their women, the neighing of their horses, were interpreted as evil omens. Their theatre was said to have resounded with uncouth noises; the buildings of the colony had been seen inversely reflected in the waters of their estuary; and on the ebbing of the tide ghastly remains of human bodies had been discovered in the ooze. Above all, the statue of Victory, erected to face the enemies of the republic, had turned its back to the advancing barbarians and fallen prostrate before them. When the colonists proposed to throw up hasty entrenchments they were dissuaded from the work, or impeded in it by the natives, who persisted in declaring that they had no cause for fear; it was not till the Iceni were actually in sight, and the treachery of the Trinobantes no longer doubtful, that they retreated tumultuously within the precincts of the temple, and strengthened its slender defences to support a sudden attack till succour could arrive. But the impetuosity of the assault overcame all resistance. The stronghold was stormed on the second day, and all who had sought refuge in it, armed and unarmed, given up to slaughter.
Meanwhile the report of this fearful movement had travelled far and wide through the country. It reached Petilius Cerealis, the commander of the Ninth legion, which we suppose to have been stationed near the Wash, and he broke up promptly from his camp to hang on the rear of the insurgents. It reached the Twentieth legion at Deva, which awaited the orders of Suetonius himself, as soon as he should learn on the banks of the Menai the perils in which the province was involved. The proprætor withdrew the Fourteenth legion from the smoking groves of Mona, and urged it with redoubled speed along the highway of Watling street, picking out the best troops from the Twentieth as he rushed by, and summoning the Second from Isca to join him in the south. But Pænius Postumus, who commanded this latter division, neglected to obey his orders, and crouched in terror behind his fortifications. The Iceni turned boldly upon Cerealis, who was hanging close upon their heels, and routed his wearied battalions with great slaughter. The infantry of the Ninth legion was cut to pieces, and the cavalry alone escaped within their entrenchments. But the barbarians had not skill nor patience to conduct the siege of a Roman camp. They left the squadron of Cerealis unmolested, nor did they attempt to force the scattered posts of the Romans around them. After giving Camulodunum to the flames, they dispersed throughout the country, plundering and destroying.
Suetonius, unappalled by the frightful accounts which thronged upon him, held on his course steadfastly with his single legion, broke through the scattered bands of the enemy, and reached Londinium without a check. This place was crowded with Roman residents, crowded still more at this moment with fugitives from the country towns and villas: but it was undefended by walls, its population of traders was untrained to arms, and Suetonius sternly determined to leave it, with all the wealth of the province which it harboured, to the barbarians, rather than sacrifice his soldiers in a vain attempt to save it. The policy of the Roman commander was to secure his communications with Gaul: but he was resolved not to abandon the country, nor surrender the detachments hemmed in at various points by the general rising of the Britons.