Too Fat Lardies have made the cards for their Bag the Hun WWII air combat game available for download as a PDF file.
From their website:
The arrival of the new edition of Bag the Hun means a whole range of new cards. To start off we have a basic card deck now available for download. Over the coming weeks we’ll be producing more nation specific card sets to allow you to add even more colour to your games, but these are a great basic set to start off with.