I will try to better explain what I meant.
Example: When the game starts, I press <ctrl> + a.
Now anytime I move units, (or when newly created units exit buildings) they will automatically attack if they suddenly encounter enemy units.
If i am in a battle, and want to disengage auto-attack, I press <ctrl> + a again to toggle auto-attack to the "off" position.
To help make it more clear, this feature would make it so "a" + point and click would not be needed as often.
But now that I think more about it, it's probably not a very needed feature. Do any players more experienced than myself think this would be a good feature?