For a future campaign, I'd like to suggest a dio of which at least 50 percent of the dio surface is covered with water. That can be a beach setting or the Mekong river, even a detail of a ship on the ocean... Anything that forces us to come up with a convincing technique to show large water surfaces.
After we succeed in doing that, we can make it even just a tad more difficult : the dio must show a surface of frozen water (a.k.a. ice). I can imagine a German soldier hiding in the reeds near a frozen pond, or Napoleon's soldiers crossing a frozen River in Russia. A submarine crew walking on the Pole ice where their sub just surfaced, etc...
The ribbons for these campaigns could be a shade of blue, maybe showing a drop of water or an icicle ?
Maybe something like this :
![](../../../groups.msn.com/_Secure/0SQAAAMIVCCaEG-2Opboo5tS8VJW59qD8xLIML8hOD5S1UmpaiDHuRnbosyFy7hw8QJRdZVRvDa2rwtld7KHnQK1JrgogZHMAzW6S4bM9x5xUeHgwrFRAxQ/campaign-2.bmp-dc=4675405914685115198)