Artillery was less flexable in ww2 than present day.
It should be harder to use and take longer to get rounds on target.(and subtract all the different munitons you have present today).
- US artillery doctrine was the best (the Brits copied it for their use late in the war 43>).
-German doctrine was ok just its effective use deterorated fast as the war progressed (most of it was horse drawn).
-Russian artillery doctrine though good in the beginning the disasters of Barbarossa in 41 distroyed most of the arm and it never really recovered until the very end of the war. Yes Russian prebombardments could be devastating and were used to great effect but the artillery arm lacked flexability. They where not short of tubes just effective ways to use them due to lack of trained artillery spotters and reliable radios. I always felt that CM1 was way to generous with the Russian arty spotters but I can see some game balance issues there. Its going to be fun to see how that all works in CM2 in the east front modules.