Ballad About a Trumpet and a Cloud (1961)

Temnikar's family prepares for Christmas, but to him, it's the time of dark premonitions and anxiety. In the mountain cave, hidden by snow, the wounded partisans are hiding, and Temnikar suspects the treason. Once the White Guard patrol shows up at Temnikar's doorstep, he finds out about their plan to go and finish off the wounded partisans.