I think they're using either the Battle of the Bulge's race to Antwerp or the slip-up that was Market-Garden.

ezekill said:

I think they're using either the Battle of the Bulge's race to Antwerp or the slip-up that was Market-Garden.

Seeing this in North-Western Europe to be precise, the Low Countries, I am pretty sure that is the Market Garden failure

MajorAmiruddin said:

Seeing this in North-Western Europe to be precise, the Low Countries, I am pretty sure that is the Market Garden failure

Transport planes over the coast would also support this.