STRATAGEMS, II. v. 34-37
where Crassus himself had drawn up liis troops in battle array. When the barbarians followed, the cavalry fell back to the Hanks, and suddenly the Roman force disclosed itself and rushed forward with a shout. In that battle Livy tells us that thirty-five thousand armed men, with their com- manders, were slain; five Roman eagles and twenty- six standards were recaptured, along with much other booty, including five sets of rods and axes.^
Gaius Cassius, when fighting in Syria against the Parthians and their leader Osaces, exhibited only cavalry in front, but had posted infantry in hiding on rough ground in the rear. Then, when his cavalry fell back and retreated over familiar roads, he drew the army of the Parthians into the ambush prepared for them and cut them to pieces.^
V'entidius, keeping his own men in camp on pretence of fear, caused the Parthians and Labienus, who were elated with victorious successes, to come out for battle. Having lured them into an un- favourable situation, he attacked them by surprise and so overwhelmed them that the Parthians refused to follow Labienus and evacuated the province.^
The same Ventidius, having himself only a small force available for use against the Parthians under Pharnastanes, but observing that the confidence of the enemy was growing in consequence of their numbers, posted eighteen cohorts at the side of the camp in a hidden valley, with cavalry stationed behind the infantry. Then he sent a very small detachment against the enemy. When these by feigning flight had drawn the enemy in hot pursuit beyond the place of ambush, the force at the side rose up, whereupon Ventidius drove the Parthians
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