Heh. I don’t sprekenzie German, but something about Panzerlied that reaches in to my male hormones, and morphs me into a boot clomping idiot.
What some people won’t do to get to Canada.
All quiet on the Western Front.
I second Stalingrad. A nice cheerful family film with absolutely no severed torsos, gangrenous, frostbitten feet or flamethrower-mutilated Russians. Obviously they all live happily ever after too.
The Desert Fox, the story of Gen. Rommel
**The Young Lions ** has sections of the war as seen from the German side.
Ich sprecht nicht den Deutch would be closer, AIUI 
Eye of the Needle?
Mediocre movie, but not a bad watch.
Inside the Third Reich, with Derek Jacobi as Hitler, based on Albert Speer’s self-derving, distored memoirs.
Since that brings Rutger Hauer to mind, there’s Fatherland, a What-if? movie aobut Nazi-dominated Europe in 1964 (The Beatles are still big, but why not a Hamburg band that got started in Liverpool instead?)
Other than Derek Jacobi, if you want to see which actor best chews the scenery in a claustrophobic set under 60 feet of concrete, there’s The Bunker, with Anthonly Hopkins; Hitler: The Last Ten Days, with Alec Guiness, and (recommended) Der Untergang with Bruno Ganz as a Parkinson-quaking Hitler.
For a look at young Hitler when he was only able to kill Jews in his fantasies while masturbating, there’s Max, about a well-intentioned Jewish guy who gave him the recognition he needed to build his dream.
There’s also Hitler’s S.S.: Portrait in Evil, an American-made TV movie about two brothers, one in the SA, the other in the SS. The Night of the Long Knives made for awkward family mealtimes.
Also The One That Got Away , “the true story of Oberleutnant Franz von Werra, the only German prisoner of war taken in Britain during the Second World War who escaped from numerous British POW camps and got back to Germany.”
The movie starred Hardy Kruger, who himself served in the German army in the war and escaped as a POW from the Americans three times.
Seconding both Das Boot and The Young Lions.
1/ already mentioned in post #12
2/ not WWII