Actually you can as i said offense is the best defense theirs many forms of offense you can play defensive position as a fake one or chaos by using calvary hide your archers in great position lead your Calvary slowly lure them (run away from your enemy) then bring your enemies towards your arrows and that will surprise the enemies for some will keep pursuing the calvary and some will attack the archers one that attack the archers will simply die and when the archers are firing send in a flank of infantry is this not the essence of a surprise attack? Diverted by chaos?