[Sidenote: Position of the two armies.] Sulla was on the west bank of the Cephissus, on an eminence named Philoboeotus, and Archelaus on the other side of the river not far off. Sulla's soldiers were alarmed by the numbers and splendour of the enemy, for the brass and steel of their armour 'kindled the air with an awful flame like that of lightning.' [Sidenote: Manoeuvres of Sulla and Archelaus.] Archelaus, marching down the valley of the Cephissus, tried to seize a strong position called the Acropolis of the Parapotamii, situated on the Assus, which joined the Cephissus to the south of both armies. But Sulla, who had wearied out his men by drudgery in dyke-making, and made them eager for a fight, crossed the Cephissus, seized the position first, and then, crossing the Assus, took up his position under Mount Edylium. Here he encamped opposite Archelaus, who, having also crossed the Assus, was now at a place called Assia, which was nearer Lake Copais. Thence Archelaus made an attempt on Chaeroneia; but Sulla was again beforehand with him, and garrisoned the place with one legion. South of Chaeroneia was a hill called Thurium. This Archelaus seized. Sulla then brought the rest of his troops across the Cephissus, to form a junction with the legion in Chaeroneia and dislodge the enemy from Thurium. He left Murena on the north of the Cephissus to keep the enemy in check at Assia. Archelaus, however, also brought his main army across the Cephissus after Sulla. Murena followed him, and Sulla drew up his army with his cavalry on each wing, himself commanding the right and Murena the left. The armies were now opposite each other, Sulla to the south, then Archelaus, then the Cephissus. [Sidenote: Battle of Chaeroneia.] Sulla sent some troops round Thurium to the hills behind Chaeroneia, and in the enemy's rear. The enemy ran down in confusion from Thurium, where they were met by Murena with Sulla's left wing, and were either destroyed or driven back upon the centre of the line of Archelaus, which they threw into disorder. Sulla on the right advanced so quickly as to prevent the scythed chariots from getting any impetus, by which they were rendered useless, for the soldiers easily eluded them when driven at a slow pace, and as soon as they had passed killed the horses and drivers. Archelaus now extended his right wing in order to surround Murena. Hortensius, whom Sulla had posted on some hills to the left of his left wing on purpose to defeat this manoeuvre, immediately pressed forward to attack this body on its left flank. But Archelaus drove him back with some cavalry, and nearly surrounded Hortensius. [Illustration: First position of the two armies at CHAERONEIA.] [Illustration: Second position of the two armies at CHAERONEIA.]