Hi There,
First: WONDERFUL game. It's become an embarrassingly big part of my life lately, as I've never experienced an ACW simulation that forced you to make strategic decisions with truly historical implications. Great work!
My question/issue is this: I have a line of solid entrenchments south of Washington (playing CSA) that are at about "8" depth. I feinted out of them with a corps in a recent turn (never leaving the region, but I started to move towards DC), then turned back to resume my position and realized that my entrenchments were gone.
I feel that sometimes that's the right approach, especially if there are enemy units in your front. But when there aren't any enemy in the region, it might be appropriate to "remember" those very deep entrenchments and allow units to reenter them if they've only been away a few turns.
Just my 2 cents. Thanks again for a great game.