I read a fascinating book a couple of years back about the incredible lengths that vignerons went to to conceal their best stored vintages during the Occupation - and to supply the lowest grade possible to the occupying forces during that time.Be rude not to have a few sharpeners then. I heard that the Allied army was delayed in its advance in the winter of '44/'45 because of all the buried and hidden Cognac that was revealed by the liberated residents.
Along similar lines, when Paris was liberated in 1944, Luftwaffe raids followed a few days later in which destroyed the wines and spirits stores of the old Les Halles market area as was.
Despite this being a major trade centre and stockpile, it seemed to have very little effect on the amount or quality of alchoholic drinks available to either Parisians or the Allied forces flocking to Paris & indulging in considerable carousing during that period.