From: Espoo, Finland
Are you limiting yourself to certain types of games? Some kind of strategy games? You know Steel Beasts? Doesn't the US army use Operation Flashpoint? You could potentially use about any game, if it is suitably modifiable, or there are some extra elements brought by an instructor / game master.
Markku "Macroz" Rontu
"Understanding is a three-edged sword, your side, their side and the truth." - Captain John J. Sheridan, Babylon 5