on several ocassions in my IO history i have made stupid mistakes by accidentally clicking the wrong button. for example building a wrong building or research than the one i was supposed to. or accidentally hitting the disband button instead of hire. the last one is a big problem (especially since i accidentally did it in nomads and its on a tight time schedule. i think the addition of an "undo" button (that can only be used in certain circumstances of course) would be great. obviously it would need a strict set of rules about when it can be used. if this cant be done maybe having a conformation button after hitting disband soldiers. so if i hit disband a message would come up and say "are you sure you wish to disband these soldiers".
ahh noway undo button..if u speak about realm time , then thrs no question of ud\nod..once u did a mistake means thats it