They would annihilate Hezbollah on a "battlefield" in less than a day.
Anyone who thinks differently is seriously deluded.
This was Saddam Hussein's delusion when he foolishly thought he could fight the American forces on "battlefields". He lost in a few hours and had to bury himself in a hole.
Hezbollah imbeds themselves among the population to use them as shields. They have been doing this for decades.
If Israel decided to unleash their full might, civilians be damned, Hezzies would cease to exist quickly.