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Rules v2 (Updated 2017/08/13)
Rules v3 (Updated 2020/03/10)
Operation Sea Lion (OPS) is the Global War 1936-1945 expansion that covers the (hypothetical) German invasion of Britain. This expansion features British defenders (home guard, auxiliary, sea forts) and German amphibious units, paratroopers & commandos and rules that bring new depth to this epic struggle!