right, first of all, you buy them, then you pick up the attackers one and gently drop them in the castle. when u do this, a yellow beam of light comes from the castle, do not drop any more attackers in there just carry on killing them. When the beam of light dissapears, you will see a blue man under that red bar at the top, these are now your men, if you click on them, 1 will walk out of the castle wearing a barrel, if you click him, he will explode. you get the archers by getting some blue men at the top by the red bar and clicking on the red flag, this is the same for the craftsmen