One Click City Wall

Hey all, I just want to say that it takes more time when we make walls around cities so its Time consuming and it effects directly to our game play especially in 2 or 3 Min. Turn based games or World games. Hence there should be a one click wall option in the city menu.
Suppose If we click on it than it will automatically reduce 3 units(priority: Militia/Infantry/Tanks) from the city. The Same option will work also to Remove wall(if city is walled).

Http://atwar-game.com/forum/topic.php?topic_id=14698

This can be locked.