This is a war movie, but the antithesis of most war movies in that there are no battlefront scenes (the brief machine-gun segment in the trailer is part of a dream). And there is very little "action," and a refreshingly minimal amount of dialogue. It's closer to a tranche du vie (slice of life) portrayal of what life was like for the women left behind, guarding the homestead and a way of life, during the madness of WWI.
Beautiful cinematography, and a view of life on a farm two generations ago for those of you who have such a heritage in your family.
The upper embed is the French trailer; the lower, slightly different one, has English subtitles [even if you don't speak French, you don't really need the subtitles to understand what is going on]. Both reveal most of the minimal plot, but that won't spoil the viewing. It's available from Netflix and probably your local library.