Excerpts from Books and Wikipedia
"The Battle of the Metaurus was a pivotal battle in the Second Punic War between Rome and Carthage, fought in 207 BC near the Metauro River in Italy. . . . Claudius Nero had just fought Hannibal in Grumentum, some hundreds of kilometers south of the Metaurus river, and reached Marcus Livius with a forced march which went unnoticed by both Hannibal and Hasdrubal, so that the Carthaginians suddenly found themselves outnumbered." [Wikipedia] "Carthaginian defeat ended the attempt to reinforce Hannibal, dooming his effort in Italy, and Rome was able to establish dominance over Spain. . . . By marching the bulk of Carthaginian forces through Gaul into Italy, Hasdrubal abandoned Spain to Rome's successful general Scipio, who proceeded to defeat any and all Carthaginian generals sent against him. In 206 B.C. at the battle of Ilipa, Scipio defeated a 70,000-man Carthaginian army with only 48,000 Romans. . . . Not until the Visigoths arrived in the early fifth century A.D. would Rome surrender Spain." [Davis: 100 Decisive Battles, p. 39-43]