From: a sunny beach nsw
You can cheat a lot with PBEM: Take the file, play a little bit and find the best way to attack. Then open the file again and play your super-optimized turn. Or just reload the turn if you had bad dice rolls.
You can do exactly the same thing on a server game.
Lets be honest here, we are all going to come across cheaters & when that happens,you will just have to decide what
to do, its a fact of life.
Besides, you can always argue that the Germans High Command, war gamed every major attack.
The beauty of PBEM...you don't need internet except to send & receive, so you take it to work, on a date..whatever!
Those are my principles, and if you don't like them... well, I have others.