+21.+ Flamininus, in his camp near the temple of Thetis, being uncertain as to the position of the enemy, sent out ten troops of cavalry and a thousand light infantry in advance, with instructions to keep a careful look-out as they traversed the country. As these men were approaching the ridge of the hills they came upon the Macedonian reserve without expecting it, owing to the dimness of the light. After a short interval of mutual alarm, both sides began irregular attacks on each other, and both despatched messengers to their respective chiefs to give information of what had occurred; and when the Romans began to get the worst of it in the encounter, and to suffer heavily at the hands of the Macedonian reserve, they sent to their camp begging for supports. Flamininus accordingly despatched the Aetolians under Archedamus and Eupolemus, as well as two of his own tribunes, with a force altogether of five hundred cavalry and two thousand infantry, after properly exhorting them to do their duty. On their arrival to the support of the skirmishing party already engaged, the aspect of affairs was promptly changed. For the Romans, inspired by the hope which this reinforcement gave, renewed the contest with redoubled spirit; while the Macedonians, though offering a gallant defence, were now in their turn hard pressed, and being forced to make a general retreat, retired to the highest points in the hills, and despatched messengers to the king for help. [Sidenote: Philip sends supports.] [Sidenote: Valour of the Aetolian cavalry.] [Sidenote: Cynoscephalae. Flamininus offers battle, which Philip, against his better judgment, accepts.]