The Annals and the Histories · Ann. 4.48

He then moved his camp near to the enemy, leaving in his former entrenchments the Thracians who, as I have mentioned, were with us. These had permission to ravage, burn, and plunder, provided they confined their forays to daylight, and passed the night securely and vigilantly in their camp. This at first they strictly observed. Soon they resigned themselves to enjoyment, and, enriched by plunder, they neglected their guards, and amid feasts and mirth sank down in the carelessness of the banquet, of sleep and of wine. So the enemy, apprised of their heedlessness, prepared two detachments, one of which was to attack the plunderers, the other, to fall on the Roman camp, not with the hope of taking it, but to hinder the din of the other battle from being heard by our soldiers, who, with shouts and missiles around them, would be all intent on their own peril. Night too was chosen for the…

Cornelius Tacitus · trans. Church & Brodribb, 1876
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