Digging in, a TOAW III "improvement" ?

[Currahee]

Digging in doesn't lower combat power of defending units; but with you dig in manually, of course, it uses up your remaining movement points.

I think it's still necessary to manually dig-in, unless you're sure to end the turn with remaining movement points, because I believe auto-dig-in still won't happen for units with zero movement points; this would seem to include units set on "reserve"; although they may have movement points, they can't move (until they "activate", usually on a specified turn); and they don't seem to dig-in automatically each turn, even if on "d". But most prominently, it would apply to Player 1 units which you might wish to dig-in before Player 2's turn commences (all auto-dig-in is done at the end of Player 2's turn); and would apply to Player 1 or 2, where your combat uses up all units' movement points at the end of your turn; ie, you don't finish the turn with any movement points left over.