My favorite WWII era movie is Pasqualino Settebellezze or the Seven Beauties. Written and directed by Lina Wertmüller in 1975, it tells the story of the adventures of a Pasqualino Frafuso who is a small time hustler in Mussolini’s Italy and later in war torn Germany.
While it is not really a “war” movie, through two somewhat parallel stories in Italy and Germany you get a comparison of the two “spirits” of fascism in those two countries and a sense of the ethos that defined their era.
At the end of the movie you are left wondering if Pasqualino Frafuso has learned the right lesson from all of his adventures.

The movie was made in Italian. It is available with English dubbing. A number of critics have pointed out the English dubbed version is better than the original Italian. This is especially true of the first scene.
I do not believe that the movie is available on a streaming service, but it was available on Netflix’s DVD service.
Here is the Italian version of the first scene, (English versions have been taken down).
https://www.youtube.com/watch?v=Mx2GoEV5yf0Here is a transcript of the poem, I like these lines.

“The ones who are always standing at the bar.
The ones who are always in Switzerland.
The ones who started early, haven't arrived, and don't know they're not going to. Oh yeah.”
Again, try to watch this with the English sound track:

The ones who don't enjoy themselves even when they laugh. Oh yeah.
The ones who worship the corporate image not knowing that they work for someone else. Oh yeah.
The ones who should have been shot in the cradle. Pow! Oh yeah.
The ones who say, "Follow me to success, but kill me if I fail," so to speak. Oh yeah.
The ones who say, "We Italians are the greatest he-men on earth." Oh yeah.
The ones who are from Rome.
The ones who say, "That's for me."
The ones who say, "You know what I mean?" Oh yeah.
The ones who vote for the right because they're fed up with strikes. Oh yeah.
The ones who vote blank ballot in order not to get dirty. Oh yeah.
The ones who never get involved with politics. Oh yeah.
The ones who say, "Be calm ... calm."
The ones who still support the king.
The ones who say, "Yes, sir." Oh yeah.
The ones who make love standing in their boots and imagine they're in a luxurious bed.
The ones who believe Christ is Santa Claus as a young man. Oh yeah.
The ones who say, "Oh what the hell."
The ones who were there.
The ones who believe in everything ... even in God.
The ones who listen to the national anthem. Oh yeah.
The ones who love their country.
The ones who keep going, just to see how it will end. Oh yeah.
The ones who are in garbage up to here. Oh yeah.
The ones who sleep soundly, even with cancer. Oh, yeah.
The ones who even now don't believe the world is round. Oh yeah. Oh yeah.
The ones who are afraid of flying. Oh yeah.
The ones who've never had a fatal accident. Oh yeah. The ones who've had one.
The ones who at a certain point in their lives create a secret weapon: Christ. Oh yeah.
The ones who are always standing at the bar.
The ones who are always in Switzerland.
The ones who started early, haven't arrived, and don't know they're not going to. Oh yeah.
The ones who lose wars by the skin of their teeth.
The ones who say, "Everything is wrong here."
The ones who say, "Now let's all have a good laugh." Oh yeah. Oh yeah. Oh yeah. Oh yeah.
Also this scene always brings a smile:
https://www.youtube.com/watch?v=YDsJ0hwRTxcAnd finally, IMO one of the best examples of a film director working magic with a camera and actors acting:
(Sentencing scene in an Italian court).
https://www.youtube.com/watch?v=ePL_7WAma_g