This is the part most people miss. While the Tank Crew module (containing the Prokhorovka map and 10 tanks) is paid DLC, there is a treasure trove of you can download legally once you have any IL-2 game installed.

These "free" tanks are less detailed than the full Tank Crew versions; they lack fully modeled interactive interiors and some advanced damage modeling features. Where to Find the Best Deals

Don't fall for "Il2 Sturmovik Tank Crew Free Exclusive Download" .exe files on random sites. Follow the Pathfinder path:

: All owners of any Great Battles title receive two free tanks: the T-34-76 (1942) and the Pz.Kpfw. III Ausf. L .