Eastern Front/fire in the steppe

[pixatintes]

I think that is correct - Fire in the Step from one perspective amounted to an update of Eastern Front, with the same maps (redone by the superior illustrator AP is now using - Guy Riessen, if I remember correctly).  I think FitS also has the same OOB as Eastern Front.

Therefore I understand that it is possible to play all (or almost all) the scenarios with any of the two games.
So, is it possible to get the scenario book separate from one of the games? In my case Fire in the steppe, because I have the Eastern front.