[pursuivant]

Cities where usually blacked out of any lights exept the dumb americanen so they could illuminate targets for u-boats

And even we dumb Americans got the hang of it after 6 months of ghastly shipping losses off the Atlantic coast. After that, America went a bit crazy about blackouts, ordering blackouts and carrying out air raid drills even in cities thousands of miles inland (e.g., Omaha, Kansas City). Never underestimate the ability of American civilians to panic needlessly when the nation is attacked. . .

As I understand it, any European city was completely blacked out, but you could occasionally see the "blackout lights" used by vehicles when flying low. Of course, since gasoline was rationed, there was very little civilian traffic on the streets, so you couldn't tell the streets of a city that way either.

Of course, if anyone wanted to do a "New York City, 1942" map, then you could have the city lit up in all its glory, complete with illuminated Empire State Building and Brooklyn Bridge. Not that NYC was ever attacked, except for a few "near miss" Me-264 test flights, and one errant B-25.