The PBEM is slower on Combat Mission than on other turn based games, because it takes 3 e-mail per one turn. TCP/IP is not the answer, because it requires both players to be online all the time. The real solution would be a dedicated PBEM server, which would receive e-mails from each player (one per player), then calculate the battle, and then send the e-mails back. Stars (a galactic stragegy game) has this feature (run by independent persons), and this is something that Big Time Software should do.