HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

Quote from the mod description:

11. You can quickly end a battle by pressing [Q]
- the battle will end as if we pressed the 'autobattle' button without magic, but instantly, without animation.
- the game will ask for confirmation.

Could this quick battle be made replayable? There don't seem to be any bugs here, and the result is very easy to repeat manually.
Without a safety net, the function is of little use, as the AI sometimes manages to lose in situations where it seemed impossible.