[Mike Fischer]

I think the combat system could be adapted to any setting. It might serve to make the game even more grim.

The players fight a different opponent each game, with the idea being that the next game has a completely different threat. Each opponent gets a special ability that can be activated at a cost to them. You could run a WW I campaign in which the players fight in Europe, then go through Palestine en route to Russia as part of the armored car brigade the British did send. At the end of the campaign they could be based in Vladivostok and fight Russian, Chinese, or Czechs.

The game rewards players for killing large numbers of enemies, with the greatest rewards going to the biggest body count. Unfortunately this is pretty well suited for WW I. You'd end up with some black black humor, the players would ask to play Polaris next just to lighten things up a bit.