The Moors, taken by surprise by the imperial army's swift advance, withdrew again to the mountainous and wooded interior, where they gathered their forces under the leadership of Ierna of the Leuathae and Antalas. Corippus suggests that they hoped that Troglita would not maintain his pursuit in the midst of winter, and that they would have the advantage over the imperial army in this terrain. Troglita encamped near the Moorish positions and dispatched an envoy, Amantius, to bring Antalas his terms: the general offered amnesty in exchange for submitting to imperial authority again.[11]