[Imp]

Yes I am coming to the conclusion the best way to handle it is fiddle with reaction times & do some by waypoints but if set up correctly normal control should work fine.
Waypoints are better used for those units you do not want to go left right or head off down that road.
A bit of thought on map design as in placement of roads & flags can achieve some pretty good results. Place waypoints for the units you want to act contrary to normal behaviour.
Actualy watching the AI at work I have to say sometimes it does a surprisingly good job. Tank platoon & 2 mech platoons moving to flag group with a possibility of fire from round the corner of a hill. It deployed 1 platoon in sensible positions to procede on foot
the other headed for the trees by the hill if it had got tanks right pretty much whay I would have done & the tanks were not that far off