i disagree, unless some safeguards are taken, for example, someone can just become marshal by hitting goldmines, so no military skills and no need for reward.
only batlles in wich the player loose NW.and that means a double mil ranking...a full one..wich everyone can see in player statistics, and a "hidden" one, in wich battles against goldmines or empty fortresse are not counted.(the only posibles fights in wich a player do not loose NW, meaning that he do not risk a finger...)