Here is a new mission for Kursk (should work from 1.3.1 to 1.5.0).
You have to take the village on the other shore of the river.
You have artillery, and a supply vehicule (sdkfz) to replennish HE shells.
For indirect fire, according Sneaksie :
Select a unit, make sure that HE round is loaded, then click the 'attack ground' button and move mouse cursor over the map to find where it can fire. If target symbol near mouse cursor lits up, it means that the SPG can hit this spot from it's current position (LOS is not required, but aiming error is much more significant in this case). Right-click on this spot to order your SPG to fire indirectly.
the mission is the number 28 ( la ravitailleuse )
http://www.39-45strategie.com/Telecharger-des-cartes.5367.0.html