If you have IL-2 1946, then the three original static campaigns from the first IL-2 release are included. I'm not sure how much updating they did, but they are there.
------------------------------ Flying online as "johnnybassman"
From the readme: This campaign is a rewrite of the original VVS fighter campaign from the original IL-2 Sturmovik simulator as released in 2001. The missions use the same map locations and historical timeline, but have been totally rewritten with more appropriate aircraft and considerably modified for realism and playability. The missions vary in difficulty from moderate to relatively tough - there are few missions that require more than just survival to continue on, so you can just choose to refly them if you did not like the outcome, and continue on if you don't want to repeat the mission. I recomend allowing instant success in the difficulty settings just in case. Most of the objectives are hidden ones, with the actual objective explained in the briefings. Keep in mind that it was VERY tough to just survive the opening months of the war in the VVS (Soviet Air Force). The only times you have a priority objective that must be accomplished is when it is mandatory for the historical timeline to be carried on with any accuracy at all. This is very rare in this campaign
