movies and tv series set in the 40s-50s

not exactly it but... blackadder, ww1. Also, north and south.

Baa Baa black sheep is closer.

MASH.

Edit : ok i looked it up, piece of cake, the price of peace, in pursuit of peace, no regrets, my chief and my regiment, the gallant men, convoy, combat, fortunes of war, dunkirk, four tank men and a dog, seem to be close enough to your wish. Note that the last one was extremely popular in eastern europe and having watched it is interesting for its pro soviet propaganda ( no less than us tv series thought ).

Bordwalk empire.

'Allo 'Allo!

Well, your request for a post-war-soldier-going-home movie is a bit difficult to come up with. When the soldiers came home, they wanted to put the war behind them, so you don't find a lot of movies like that made in the 40's and 50's. Years later, the Vietnam war sparked all kinds of movies, but that's a totally different ball of wax.

If you're looking for a drama about post-WWII, the only 40's movie that comes to mind is "The Best Years of Our Lives."

[Edit: I found two more from 1946 - Murderers Among Us, and Till the End of Time.]

If you're willing to step out of the 40's and 50's, you might take a look at this page for more suggestions. If you're into books, you might try Soldiers From the War Returning.