Bumbarash

Bumbarash Russian is a 1971 Soviet adventure film, a musical comedy in two episodes loosely based on some early works and the novel Bumbarash by Arkady Gaidar.

It is a period of Civil War. Former Imperial Russian Army Pvt Bumbarash was a prisoner of war to Austria,citation needed but now is returning to his home village, where all, including his beloved girlfriend, believe he is dead.

Source: Wikipedia