Who did Hannibal’s troops fight in the Alps?

I think the answer is

 the Romans

For over 2,000 years, historians have argued over the route used by the Carthaginian general Hannibal to guide his army — 30,000 soldiers, 37 elephants and 15,000 horses — over the Alps and into Italy in just 16 days, conducting a military ambush against the Romans that was unprecedented in the history of warfare

Explanation:

pls mark brainliest