Soldier's Lullaby (2018)

Stevan Jakovljević, a biology teacher and World War I veteran who fought for the Serbian army, arrives to the celebration of the twentieth anniversary of the end of the war and the opening of an ossuary in the village where he used to be stationed with his first company, the Fifth Artillery Battery. There he encounters only the aged Commander, and through their flashbacks we see the fate of the Fifth Battery which was disbanded in that very village.