In the latter part of the 2nd Century BCE, the Taurisci tribe would call upon Rome for help against the migrating Germanic tribes, the Cimbri and the Teutones. Within the general proximity of Noricum, Consul Papirius Carbo led the Roman army to a crushing defeat at the hands of these Germanic tribes in 113 BCE. The victorious tribes continued to move west through Gaul and avoided Italia for another 10 years, but in 103 BCE, after other considerable victories their return to the region posed a serious threat to Rome. Roman superiority would be established, however, when Gaius Marius defeated the Teutones at Aquae Sextiae and Q. Lutatius Catulus defeated the Cimbri at Vercellae in 102 and 101 BCE respectively.

From that point on Noricum formed a peaceful border state of Rome and the mining industry and metalworking boomed. In 48 BCE during the Civil War between Caesar and Pompey, the Noricans threw in the full weight of this considerable industry to Caesar's cause. The Norican King Voccio, who was an elected King, also supplied Caesar with an impressive auxiliary calvary unit. Caesar's ultimate victory would help cement the friendship between Noricum and Rome throughout the rest of the Empire's history.