Currently there is no way for players who run organized PvP server to make players on the OpFor team appear with the proper faces. When players join the game always uses their chosen face from their profile. It would be nice if there were a way for multiplayer servers to force pre-selected faces on players so their nationality matched their uniform.
As it is you cannot be Iranian even if you plan on it because the faces are not available options. {F20639} {F20640}