The hero give bonus only to the troops that are with him and from the same player.

Example ::
    Player A have next defense from :
        - player B, 1000 Praetorians and one hero with 3% defense bonus;
        - player C, 500 spears without hero;
        - player D, 1000 Paladins and hero with 6% defense bonus.
    Player A will have in final:
        - 1000 + 30 = 1030 Praetorians, 30 are the bonus from the hero who sent 1000 Praetorians;
        - 500 Spears, here will be no bonus because he do not sent anyhero;
        - 1000 + 60 = 1060 Paladins, 60 are the bonus from the hero who sent 1000 Paladins.
                                   
    Atention : :
        If the hero has no defense bonus and is in the same city with his troops, when is attacked will help only with his defense.