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

If the hotkey is something like [CTRL]+[Shift]+[A], then it could work without confirmation, but it’s still better with confirmation. In my opinion, it’s better to press one more button than to get upset because you accidentally did something you didn’t intend to. However, displaying the number of creatures that will be recruited and the amount of resources spent is not necessary.