What I am working on...
 

Using Roll20.net I am trying to do a virtual table top version of the game. Right now I am working on Escape from Kalisz scenario. The two pictures show Hummer and a LAV crossing the river on a rail-road bridge before heading south.

The first picture shows the players view and the second one shows the GM view.

Interesting.

The two vehicles cross the rail road bridge and travel along the tracks until they come to the lake. Not wanting to be trapped by it they travel south along a small dirt road. They decide to forget the main route and continue along the road. Suddenly artillery fire erupts and both main bridges across the river get destroyed in a major explosion.

The team prepares to cross a small bridge into the village to find food and fuel.

Very cool, and another +1 for Roll20.net. Using it for a D&D Next/5th Edition game. The interface/platform is most excellent. The only complaint we've had is that voice chat only has a global volume setting--no per-user volume sliders... so we use Google Hangouts for the voice. Problem solved.

I use Google Hangouts and Skype. The hard part is it is set up for D&D so the maps are hard to work into a usable format. It is more trial and error.

This is a fantastic idea. It really bridges the gap that a PBEM system or a PBP system just can't do.