I think what he's sayin is like, assign shortcut key "r" for repeat. (Yeah I know "r" is taken, but work with me.)
Ok so to move a stack of units one square north, you'd hit "shift+r" (to _record_ the move) and then move the first unit north. Then, when the next unit is activated, just type the shortcut "r" and the unit moves north.
The only problem I see with that is that the game likes to auto select new units in a funky order. Like I'll have a stack of four archers and two horsemen, and it'll activate the four archers, then some worker in BFE, and then the horsemen...