[thejeff]

Why?
What does it gain you?

It's potentially thousands* of units that have to be put in a random order. And then you have to iterate over them. Which probably requires a new structure to hold the order that has to be created every time. Sure, you could do it. It probably wouldn't even take that much longer. There's a lot going on in each turn. Still, large games already take a long time to process.

Maybe I've just been working with slow, low memory chips too long.

*The way it's set up now, it's probably 10s of thousands since each unit commander or not, has a unit id. If you were going to do this, you'd probably want to treat troops and commanders separately to simplify the sort.