In 366, there were reports of a defection of the Hernici. In 362, Rome declared war on them. The Romans were ambushed and routed. The consul who led the army died in the battle, and the Hernici surrounded the Roman camp. The Romans sent a relief force and the Hernici were defeated in a tough battle. In 361, the Romans seized Ferentinum, a town of the Hernici. When they were on their way back, the people of the Latin city of Tibur shut the city gates on them. In 360, the Gauls encamped near the River Anio. After some skirmishes, the conflict was resolved by a single combat between Titus Manlius and a Gaul, which the former won. The Gauls left, went to Tibur, and allied with it, receiving supplies from the city. Then, the Gauls went on to Campania. In 360 BC the Romans attacked Tibur, prompting the Gauls to return in order to render aid. They then ravaged the territories of Labici, Tusculum, and Alba Longa. The Romans kept an army at Tusculum and fought the Gauls with another one, not far from Rome's Colline gate. After a tough battle, the Gauls went to Tibur again. The two allies were defeated by the two Roman armies. A third Roman army defeated the Hernici in a major battle. In 359, a small force from Tibur arrived at the walls of Rome, but it was repelled easily. In 358, the Etruscan city of Tarquinii plundered Roman territory by Etruria. The Romans levied an army against them and one against the Hernici.