the problem is if you set move on red, the hammers don't retreat if a unit comes close to them.
If you set them on fire at will, and move around, unit AI on, they should move away from the closest target if it is beyond 90% of hammers range.
Also I want units on fight to hold a middle distance.
* Enemy can attack at 50% range, you on 100%.
* * try to hold a position of 75% or 80% instead of 95% - avoid that enemy retreats easily
* Enemy has more range
* * Try to come as close as possible (raiders, heat ray units)