The seem to indicate -
1)Both players have the same number of start points (note they will not use them in every scenario)
2)Adust these start points by the random points modifiers
3)These are the final start campaign points
4)Select your campaign units list
5)Select the first scenario, and points to be used from the campaign units list for your battlegroup to be played
6)Play the scenario as normal..
7)At the end of the scenario, work out the victory type - this requires counting each sides losses
8)Remove any casualties from the campaign units list (effectively whats left of your battlegroup returns to the campaign list)
9)Roll "0%/10%/25%/50% of the final starting points to spend on reinforcements". Argueable whether this is applied to the original start points (both sides the same), or to the final starting points as calculated by stage (3) above. Perhaps Pete will confirm on this. If applied to original start points this will tend to help even out historical differences over time. If applied to the final start points...it makes that first campaign roll even more important!
10)Spend the reinforcement points on new units to add to the campaign list.
Hope this helps
