We actually just practiced offloading units in Rotterdam (I think) or somewhere on the Atlantic coast last year and transporting them by rail to Grafenwoehr and then to Poland. The Germans were complaining about roads blocked for miles as US armor moved East.
Russia wasn’t trying to deny access to the Baltic.
And our German plant was complaining about the traffic snarls! Well, my counterpoint said it was “Cool” but that it was delaying shipments.