Bayonets are making a comeback for things like escorting prisoners and keeping civilians at a distance. A review of a book about luftwaffe gravity knives
stated that from the pics it looked like they were used mostly for cutting sausage in the field. If I had to carry a knife in combat it would probably be a Buck 119, cheap ,tough and a great fighter if needed. Knife fighting skills are much more usefull for people who don't carry a rifle and live somewhere you can't carry a handgun like here in canada.