the rules tend to focus on characters (they are basicaly the same as the Lord of the Ring rules with the Mordheim Campaign System added).
I'm not sure if they capture the flavour of the era, as I didn't live back then, but they definatly capture the flavour of hollywood films set back then. (for example: breaking out of prisons with dynamite or horses shouldn't work in the real world, but it's fine for LotOW)