The Battle of the Trebia (or Trebbia) was the first major battle of the Second Punic War. It was fought between the Carthaginian forces of Hannibal and the Roman Republic in December 218 BC at or around the winter solstice.
The Carthaginian forces of Hannibal Barca defeated the Roman army, les by Tiberius Sempronius Longus, on the banks of the Trebbia River.
Only 4,000-5,000 Carthaginian soldiers fell during the conflict, far fewer than the Romans' 26,000-32,000 causalities.