Again, your fixating on the one thing. We asked for troops with different roles (ie, attack, defense, and capture).
The attack troops will move away from the point they touched down in a general outward direction in groups of two. They will go out to about 10k, and then turn around and head in the general direction of the drop point. They will engage defense troops, and GV's, with the GV's costing them 2 troops for every 1 destroyed.
Defense troops will either head to the town (if dropped within 2k of the town) or spread out in a line (over a distance of something like D300) and wait for enemy troops or light GV's, at wich point they will open up and two will try to next to the GV and blow it up at the cost of their cartoon lives. They will engage attack troops, and capture troops, dying only when hit.
Capture troops will function simmilarly to the troops we have now, but they will engage defense troops and fight their way toward the map room. If you drop 20 and there are 10 defense troops, then likely you will take the town.
Defense troops will stay in the area for 20 mins, before dissapearing.