Combat Commander: Battle Pack #6 Sea Lion - Rules of Play says:

Combat Commander: Battle Pack #6 – Sea Lion is the sixth themed collection of scenarios for use with the Combat Commander series of games. The theme of this Battle Pack carries forward from BP #5 and presents a what if situation of a successful invasion of Great Britain. The early and successful conclusion to the Battle of Britain allows the Luftwaffe to dominate the skies over southern England and the Channel Ports of Southampton and Portsmouth. The actions represented in the battle pack cover the period of late September thru December 1940 and showcase the initial invasion, the Axis advance towards London, its eventual capture, the early entry of the United States into the war, and finally the British counter offensive, Operation Tremor, to drive the hated enemy from its shores. CC-Sea Lion features ten new scenarios printed on card stock and ten new maps.