After Scipio’s surprise attack and capture of Carthago Nova, the three Carthaginian armies in Iberia remained separated, and their generals at odds with each other, thus giving the Romans a chance to deal with them one by one. Early in 208 BC, Scipio moved against Hasdrubal, whose force wintered at Baecula, on the upper reaches of the river Baetis (modern day Guadalquivir).