In response to Glaber's siege, Spartacus' men made ropes and ladders from vines and trees growing on the slopes of Vesuvius and used them to rappel down the cliffs on the side of the mountain opposite Glaber's forces. They moved around the base of Vesuvius, outflanked the army, and annihilated Glaber's men. A second expedition, under the praetor Publius Varinius, was then dispatched against Spartacus. For some reason, Varinius seems to have split his forces under the command of his subordinates Furius and Cossinius. Plutarch mentions that Furius commanded some 2,000 men, but neither the strength of the remaining forces, nor whether the expedition was composed of militia or legions, appears to be known. These forces were also defeated by the army of escaped slaves: Cossinius was killed, Varinius was nearly captured, and the equipment of the armies was seized by the slaves. With these victories, more and more slaves flocked to the Spartacan forces, as did "many of the herdsmen and shepherds of the region", swelling their ranks to some 70,000. The rebel slaves spent the winter of 73–72 BC training, arming and equipping their new recruits, and expanding their raiding territory to include the towns of Nola, Nuceria, Thurii and Metapontum. The victories of the rebel slaves did not come without a cost. At some time during these events, one of their leaders, Oenomaus, was lost—presumably in battle—and is not mentioned further in the histories. Motivation and leadership of the escaped slaves By the end of 73 BC, Spartacus and Crixus were in command of a large group of armed men with a proven ability to withstand Roman armies. What they intended to do with this force is somewhat difficult for modern readers to determine. Since the Third Servile War was ultimately an unsuccessful rebellion, no firsthand account of the slaves' motives and goals exists, and historians writing about the war propose contradictory theories. Many popular modern accounts of the war claim that there was a factional split in the escaped slaves between those under Spartacus, who wished to escape over the Alps to freedom, and those under Crixus, who wished to stay in southern Italy to continue raiding and plundering. This appears to be an interpretation of events based on the following: the regions that Florus lists as being raided by the slaves include Thurii and Metapontum, which are geographically distant from Nola and Nuceria. This indicates