Nazi Swastika, Harbor scene

When he tells her to get him a boat, I noticed that there is a Nazi Swastika that is partially drawn or chiseled into the rocks on her left.

Watch as she pulls the boat out of the rocky harbor.
I think this is or was the setting for another WW-2 movie at some point, but I can't rememer the name of it.

Something to do with a German rocket factory along that part of the harbor on the opposite side from the Nazi symble, they must of forgot to remove it.