Total Battle is a war game in which player attacks are essential to the game mechanics, city development, and general game progression.
In addition to our constant efforts to balance the game and make it a level playing field for all players, specific regulations are sometimes created, edited, and enforced by players themselves. Such regulations are usually called the "Rules of Engagement" and are generally viewable in user-created private chat channels.
In order to find out if such rules exist in your Kingdom, you should go ahead and post the relevant question directly in Kingdom chat.