Well if it is a training exercise , its still impressive , it might very well be training , their formations look valid . I doubt if many of our burger eaters would be able to run as much as these guys do ? Imagine 5000 troops ( a Roman legion ) with all the noise , screaming , gore of a battle , and maintaining the formation as well as adjusting to the flow of the battle . Obviously they did , and had the discipline . I bet that is what the Koreans are going for , up the ante as the troops get more seasoned .