The distress in the Pontic camp was great; the draught animals even had to be killed; at length after remaining for forty-five days the king caused his sick and wounded, whom he could not save and was unwilling to leave in the hands of the enemy, to be put to death by his own troops, and departed during the night with the utmost secrecy towards the east.

Cautiously Pompeius followed through the unknown land: the march was now approaching the boundary which separated the dominions of Mithradates and Tigranes.

When the Roman general perceived that Mithradates intended not to bring the contest to a decision within his own territory, but to draw the enemy away after him into the far distant regions of the east, he determined not to permit this.
Battle at Nicopolis The two armies lay close to each other.

During the rest at noon the Roman army set out without the enemy observing the movement, made a circuit, and occupied the heights, which lay in front and commanded a defile to be passed by the enemy, on the southern bank of the river Lycus (Jeschil-Irmak) not far from the modern Enderes, at the point where Nicopolis was afterwards built.

The following morning the Pontic troops broke up in their usual manner, and, supposing that the enemy was as hitherto behind them, after, accomplishing the day's march they pitched their camp in the very valley whose encircling heights the Romans had occupied.
Suddenly in the silence of the night there sounded all around them the dreaded battle-cry of the legions, and missiles from all sides poured on the Asiatic host, in which soldiers and camp-followers, chariots, horses, and camels jostled each other; and amidst the dense throng, notwithstanding the darkness, not a missile failed to take effect.