Captain von Tepp and his Butcher Squadron swarm the skies in response , outnumbering the Polish four to one .
With the overwhelming forces of Nazi Germany flooding into Poland in September , 1939 , only the Polish Air Force remains as the last major line of resistance .
Captain von Tepp and his Butcher Squadron swarm the skies in response , outnumbering the Poland four to one .
With the overwhelming forces of Nazi Germany flooding into Poland in September , 1939 , only the Polish Air Force remains as the last major line of resistance .