The frontier of America is on the Rhine.
— Franklin D. Roosevelt

Behold then Septimus Dodge returning to Dodge-town victorious. Not crowned with laurel, it is true, but wreathed in lists of things he has seen and sucked dry. Seen and sucked dry, you know: Venus de Milo, the rhine or the Coliseum: swallowed like so many clams, and left the shells.
— D. H. Lawrence

Let us never forget this: since the day of the air, the old frontiers are gone. When you think of the defense of England you no longer think of the chalk cliffs of Dover; you think of the Rhine. That is where our frontier lies.
— Stanley Baldwin

Since the day of the air, the old frontiers are gone. When you think of the defense of England you no longer think of the chalk cliffs of Dover; you think of the Rhine.
— Stanley Baldwin