Rise of the Reds added in Russian forces but removed GLA if I remember correctly. Was quite nice but seemed to be more of a Multiplayer mod. Shockwave was quite nice since you could still play General's Challenge with extra shit and you could play with the three extra generals.
No, I think that was only in the very first version (discontinued) of the mod. Since then, the team behind Shockwave started it again, almost from scratch from what I understand, and added two factions (Russia and Europe), for a total of five.
Oh, I haven't played Rise of the Reds in some time so I did possibly have the first version of Rise of the Reds... I might take a look into it in the future at some point.