I just come to say: ****! **** this foolish module system!
they same function, I have done that in battle field, but I just can't do that on world map, because I can't find a way to deal with single certain troop!(none NPC) there is no operation for this!
just wasted 3 hours for this ****
ps: I will be very happy if any one can proof I was wrong and was a big fool on this issue: you can't find out a single certain troop on world map, which is not a hero and the stack he belongs to has more than one troop.