Pretty good concept ! I don't have anything more to say than what was already said. I think the soldier didn't had any use in this version of the game ? Maybe a little more feedback and you could follow a very good trail.
People criticised the ants circling around bushes, but this bug reminds me of ant mills :
If you ever work on it more, you could add the fact that the scout follows the mouse as long as the left click stays pressed (in order to not spam clic).
Overall, neat entry !