London Can Take It! (1940)
Commentator: [loud explosions of bombs and anti-aircraft are heard on the soundtrack] These are not Hollywood sound effects. This is the music they play every night in London, the symphony of war.
Commentator: Soon the nightly Battle of London will be on. This has been a quiet day for us. But it won't be a quiet night. We haven't had a quiet night now for more than five weeks. They'll be over tonight. They'll destroy a few buildings and kill a few people - probably some of the people you're watching now.