The Annals and the Histories · Ann. 1.63

Germanicus, however, pursued Arminius as he fell back into trackless wilds, and as soon as he had the opportunity, ordered his cavalry to sally forth and scour the plains occupied by the enemy. Arminius having bidden his men to concentrate themselves and keep close to the woods, suddenly wheeled round, and soon gave those whom he had concealed in the forest-passes the signal to rush to the attack. Thereupon our cavalry was thrown into disorder by this new force, and some cohorts in reserve were sent, which, broken by the shock of flying troops, increased the panic. They were being pushed into a swamp, well known to the victorious assailants, perilous to men unacquainted with it, when Cæsar led forth his legions in battle array. This struck terror into the enemy and gave confidence to our men, and they separated without advantage to either. Soon afterwards Germanicus led back his army to…

Cornelius Tacitus · trans. Church & Brodribb, 1876
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