Drusus drew rein at the general's side, ready to go anywhere or do anything that was needed, his position being one of general aide-de-camp.
Caesar was facing east; Pompeius, west.

Five miles of mainly level country had extended between the camps, but Pompeius had pitched on a hill site, with a river and hills to flank him.

There he might safely have defied attack.

But he had come down from the eminence.

He had led his army out into the plain, and the camp was a full mile behind.