Wed May 11, 2016 5:30 pm
I do not have the answer, but I have some thoughts.
For what it is worth, most of my fixed DC support units were lost when you (Straight Arrow) stormed my capital.
I've put support units into a division for one turn so that a commander wouldn't lose statistics in the next turn when their combat units arrived. I've forgotten about that and left units in that division for a few turns and that division has never been selected during the battle, so none of the units were killed.
In battle, division selection is probabilistic and based on power, I think. So if a division of support units were selected, that would probably mean that all of your infantry divisions have retreated or have very little power, but your stack has not yet succeeded at retreating. In this case, you might lose the support units if they were loose, so it isn't clear which is better.
During the retreat phase, do support units take hits (I think they do, but am not sure)? I wonder if they would be more likely to take hits in a division (and I wonder if that is a good or bad thing). Loose unite are more often destroyed during retreat than units in division - this can be rough when a general is injured or killed in a battle. The support units have high evasion, though, so who knows.
Across the South, we have a deep appreciation of history -- we haven’t always had a deep appreciation of each other’s history. - Reverend Clementa Pinckney