PBEM
From SomefinkWiki
It turns out there's nothing funny about Play By E-Mail. You see, in the long ago times, the game produced by Battlefront could only be played against another person by taking a turn, saving the turn and emailing it to your friend. This had many drawbacks and no benefits and is responsible for the War on Terror, which only began after Combat Mission was created.
Basically, it's waiting three millenia for juan_gigante to send you a freaking file, yet knowing it will never come, because he knows he's losing.
Notorious For
Forcing people who wanted to kill other virtual soldiers and destroy virtual tanks with their own virtual soldiers, virtual tanks and virtual panzerfausts to spend most of their time refreshing the Battlefront message board as they wait for their moronic opponent to luck out and get a gun hit on a King Tiger with a 20mm.

