The Captain from Kopenick
Der Hauptmann von Köpenick (original)
The 1956 movie based on the theater play by Carl Zuckmayer based on the true story of cobbler Wilhelm Voigt who dressed up as a German military officer and, with the help of unsuspecting soldiers, took over the city hall in Köpenick and confiscated the city's purse.
Starring Heinz Rühmann, Martin Held, Hannelore Schroth, Willy A. Kleinau, Leonard Steckel, Friedrich Domin, Erich Schellow, Walter Giller, Wolfgang Neuss, Bum Krüger
It's a drama and comedy movie, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Australia.