Quote Originally Posted by ajaxfetish
3) try a crap unit, ie peasants, for treason over and over again. When they get spy-resistance virtues, disband and train a new one. Before long you can have a network of 5-valor spies to send abroad without having exposed them to any danger in the process.
I personally would not disband or even kill the general with an inquisitor. If a spy manages to kill a general with really good spy-resistance virtues, he gains more valour than for killing an ordinary general. I've sometimes had spies gain 2 stars for succeeding against generals with "Spy Network".