By choosing scenario all available units will be already on the map and playmats EXCEPT for the British Hurricanes and Spitfires, that must be randomly draw from respective pools.
On the British Player Playmat, there are 2 or 3 pools of units (depending on scenario) : one for convoys, one for Hurricanes and one for Spitfires.
This module don't track the limit on the AAA counters! As British player you must be very careful NOT to surpass the countermix limit on the number of AAA assets.
Scenario 1 is the most difficult and long one, we advise to start playing with Scenario 2 to get the feel of the game, then try either 3 or 1.
No Scenario option simply uploads the module with all convoys on the playmat.