Anyways, the challenge is to create a situation where Operation (Unmentionable Sea Mammal) will have a reasonable chance of succeeding. This doesn't just have to be for Nazi Germany. It could also be for a France that goes Fascist, any other country that invades France and wants to invade Great Britain too, or a coalition of European countries.
Since this is in After 1900, all PODs must be on or after January 1st, 1900.