Dear Elza! (2014) on Netflix

Plot summary

A young teacher who speaks three languages, Lombos Mihály serves in the Royal Hungarian Army on the eastern front in Ukraine at the end of 1942. Loyal to his family and his homeland, he wants nothing more than to see his young wife again. An administrative mistake keeps him from going home on leave, so he remains with his unit and marches further east. When an attack wounds him, he passes a night behind enemy lines, sheltering in a pit. There an old man, Ziffer Lajos, keeps him company, and the two talk until morning. What the old man says unsettles the trust Lombos has placed in his military family and in his country.