So I'm looking for a movie I saw when I was a kid and its about this family that lives in a town and the town gets taken over by an army and the boys in the family have to get all the ammo and guns they can find and go in the woods neir their home and hunt for food until they go back for more ammo and decide to fight back and try to kill the small army, and I can't remember the name

That sounds a bit like part of the plot of Red Dawn: Red Dawn (1984) - IMDb (http://www.imdb.com/title/tt0087985/)