This one is a bit of an oxymoron: a quiet, low-key war film.
The film opens in November 1861 as the Mellon brothers - Henry and Francis - are struggling to keep their farm operating. After a fight with Francis, Henry joins the Union Army. The brothers keep in touch through letters even though both are illiterate.
It's shot with handheld cameras using (mostly) natural light and with no soundtrack. This helps make a slice of mid-nineteenth century life both at home and at war. The war scenes show little actual combat (probably because of the budget). Even so, you get a sense of what life was like in the Union Army in the early years of the war.
This will not be for everyone. Some will find it too slow all around, especially to show the titular men going to battle.