The first proper game I played against my sister would be the reenactment of Battle of River Plate. The game was split to 2 set of 6, 1st was the actual battle and the escape to Montevideo constituted the next 6.
Yes the battle was completed in 6 rounds with her NebB being obliterated by "Graf Spee" but her CR90 completely blew "Graf Spee" out of the water by the 2nd round of the 2nd set of 6.
We both agreed that the 6 round rule was just fine but the lack of ships is most disturbing.