So here's another movie partly about the Franco-Prussian war. I think it tells the tale of a Bavarian poacher (see a photo of the real man here) who was once in the war. Imdb says
This is the true story of Girgl Jennerwein, a rebel in the German alps from 1848 - 1877. Supplied with a deeper sense of justice, he confront's the harsh suppression of the mountain farmer being used as slave laborers for the gentry. Poor people are sometimes left close to starvation, Girgl's poached meat helps them to cope. This does not get un-noticed by the Authorities, who set an experienced wild-ranger on his trail. A Ranger that has killed Girgl's father for the reason of poaching. Girgl, a former soldier of the imperial German army will prove more than a challenge. It is a beautiful Woman however that will drive a wedge between Girgl and his supporters. The acting is superb, the photography just beautiful, the story has some of the grittiness of Clint Eastwood's "UNFORGIVEN". Not made after any Hollywood formula, the viewer is left with a taste of historical realism.