The Taliban lost immediately and was suppressed indefinitely until the US decided to leave. It's a good demonstration of how well the US military can suppress even decentralized and suicidally fanatical movements for as long as it wants.

Suppressing them didn't cause them to stop fighting, though. In every guerrilla war the conventional army is nominally in charge, and generally never loses any sort of pitched battle. The whole military theory of guerilla warfare is to avoid shootouts in favor of hitting the enemy and running away.