Does doctrine matter in this series?

[Sir John Cope]

I think that the WWI titles do an excellent job of prompting historical play, due to their command ranges, fix/release rules, etc.

I agree - the instances I can recall of artificial or ahistorical actions in my PBEM games are very few. 

(OK, in an ongoing FR 40 campaign I did see the German Rhineland rail system torn all to hell by some Dutch border guards-turned-commandos operating deep in enemy territory [well played, Iley!], when probably in reality my line-of-communication troops, not to mention local Schutzpolizei on their bicycles, would have rounded up these desperate fellows with little trouble. But I count that as a minor example!) 

Edit: Ooops - misread WWI for WWII here. Never mind!