Yeah this is usefull, but sometimes units forget to follow leader unit. It's pretty annoying when you plan attack and units don't listen to your orders :P But this game is super anyway :D (Sorry for my english :D)
I also had played in Dune 2 on Genesis (when i was 12) :D And now smoetimes i play on my old MegaDrive. And i must say that i love this game :D Dune forever !