They might add it later for DLC.Though i believe because soviets have heavy late game armour..they didn't take that path with americans..basically saying..u want heavies as allies go soviets.
$2.99 DLC with the following
0 CP: elite troops training
0 CP: super grenades with super booms
Half CP: carbines with leaser guided lava bullets with purinas inside forming a sharknado
2/3 CP smoke nuke
1 CP pershing ace with patton, john pershing, uylysiss grant, and george washington harvard for 0 res