Swastika is still used by finnish airforce. it is hidden behind propeller...     Yep, but it is not even hided. That Air force Academy insigna has it behind propeller, but most cases it is wide open. For example all Air Force flags has big black svastika on blue field. And have a look on Air Force Staff :   http://www.ilmavoimat.fi/images/ilmave.gif  (From page:  http://www.ilmavoimat.fi/index.php?id=101 )