Well the 6.6 is ok, maybe a bit lower. Apart from the distortion of history I remember it was decent movie. But there is another one often forgotten: The last U-boat (Das letzte U-boot). Not about Enigma but this boat should bring Uranium (or any material to build a A-bomb to Japan) as well plans for Jets etc. I don´t know how historic this last u-boat was but I liked the movie It is on youtube (in German, but the allied guys speak English in it) Btw: Seems both Japan and Ger were a bit careless of their coding secrets.