There Can Be Only One! The Wrong One!
RAF includes a complete two-player game, with its own rule book. The British and German players make all their own decisions. There are no automated decisions by the game system in the two-player game.
John, I wasn't saying that the two player game was bad or non exist - rather that the OP asked if it was primarily a solo game, which with two solo games in the box, it seems to me to be more solitaire than multi player by design.