Fabius was well aware of the military superiority of the Carthaginians, and when Hannibal invaded
Italy he refused to meet him in a pitched battle. Instead he kept his troops close to Hannibal, hoping to exhaust him in a long
war of attrition. Fabius was able to harass the Carthaginian foraging parties, limiting Hannibal's ability to wreak destruction while conserving his own military force. The delaying tactics involved a pincer of not directly engaging Hannibal while also exercising a "
scorched earth" practice to prevent Hannibal's forces from obtaining grain and other resources.
The Romans were unimpressed with this defensive strategy and at first gave Fabius his epithet as an insult. The strategy was in part ruined because of a lack of unity in the command of the Roman army: Fabius'
magister equitum, Minucius, was a political enemy of Fabius. It was only after Fabius had saved him from an attack by Hannibal that Minucius placed himself under Fabius' command. Minucius had been named a co-commander of the Roman forces by Fabius' detractors in the Senate. Minucius openly claimed that Fabius was cowardly because he failed to confront the Carthaginian forces. Near the present-day town of
Larino in the Molise (then called Larinum), Hannibal had taken up position in a town called Gerione. In the valley between Larino and Gerione, Minucius decided to make a broad frontal attack on Hannibal's troops. Several thousand men were involved on either side. It appeared that the Roman troops were winning but Hannibal had set a trap. Soon the Roman troops were being slaughtered. Fabius, despite Minucius' earlier arrogance, rushed to his co-commander's assistance and Hannibal's forces immediately retreated. After the battle there was some feeling that there would be conflict between Minucius and Fabius. However, the younger soldier marched his men to Fabius' encampment and he is reported to have said, "My father gave me life. Today you saved my life. You are my second father. I recognize your superior abilities as a commander."
At the end of Fabius' dictatorship, the command was given back to the consuls
Gnaeus Servilius Geminus and Marcus Atilius Regulus. In the following year, the new consuls
Lucius Aemilius Paullus and
Gaius Terentius Varro were defeated at the
battle of Cannae, and the wisdom of Fabius' strategy was understood. Thus
Cunctator became an honorific title. This tactic was followed for the rest of the war, as long as Hannibal remained in Italy.