No such luck that the F&M Grill exists today in Berkeley, Ca. On the back of it, however, is a note to take the 7:41/Oakland. That is in his handwriting. That is totally untraceable even on the internet - particularly with all the troop trains etc. so I'm going to hope that he spent a few weeks in Oakland and San Francisco and went back home to find his family (one version of the story). The other is that he shipped back out for the invasion of Japan as Okinawa was going on right at this very time. .. and the piece of fabric came from his days in Tokyo after the surrender as was another story.
I know he married my mom in July of 1946 (this week by the way) so he didn't have a lot of time to go bouncing around the pacific. He has been dead for 10 years now so I can't ask him nor anyone actually. Funny how a 65 year old menu makes you think.