Beric the Briton by G.A. Henty

It was late at night before Porus with the three Gauls joined the rest of the band in their new encampment on the eastern slope of the hills.

"As soon as the moon rises, Beric, we must be up and moving. The Romans are in earnest. When they came through the forest they ascended for some little distance, and then the spearmen halted and the light armed troops scattered in parties of four searching the country like dogs after game. They were not very long before they discovered signs of us, whether footmarks or broken twigs I know not, but following them they soon came upon the entrance of the ravine. No doubt our marks were plain enough there, for the spearmen were brought down. What happened then I know not; no doubt they entered and found that we had gone. At any rate, in a short time they set out briskly up the mountain, the spearmen as before keeping together, and the light armed men scattering.