Is mixed teams allowed? The newspost said mirrors...
Yes mixed is allowed. Anything is allowed. We'd like you to work out the round format with your opponents, but we don't want to force you to play a faction if you don't want to play that faction. So I'd say you have two options:
1) Traditional coh style, play Soviets vs. Germans, then switch for gm2. VP leader picks faction for game 3.
or
2) You say what your army composition will be at the start (either SS, SG, or GG), and you stick with that composition throughout the Best-of-3.
Now which of these methods you pick is up to you and your opponents. Sound good?