They then undertook a night march to escape, but marched straight into another trap that Arminius had set, at the foot of Kalkriese Hill. There, the sandy, open strip on which the Romans could march easily was constricted by the hill, so that there was a gap of only about 100 m between the woods and the swampland at the edge of the Great Bog. Moreover, the road was blocked by a trench, and, toward the forest, an earthen wall had been built along the roadside, permitting the Germanic tribesmen to attack the Romans from cover. The Romans made a desperate attempt to storm the wall, but failed, and the highest-ranking officer next to Varus, Numonius Vala, abandoned the troops by riding off with the cavalry; however, he too was overtaken by the Germanic cavalry and killed, according to Velleius Paterculus. The Germanic warriors then stormed the field and slaughtered the disintegrating Roman forces; Varus committed suicide. Velleius reports that one commander, Ceionus, “shamefully” surrendered, while his colleague Eggius “heroically” died leading his doomed troops.