5. And not many days after the feast, on the twenty-first of the month Artemisium, a certain marvelous vision was seen which passes belief. The prodigy might seem fabulous were it not related by those who saw it, and were not the calamities which followed deserving of such signs. For before the setting of the sun chariots and armed troops were seen throughout the whole region in mid-air, wheeling through the clouds and encircling the cities.