Here is an article on one way the army is using videos in online learning. http://www.cnn.com/2009/TECH/05/15/soldiers.videogames/index.html
They are creating "immersive cultural simulation" programs, which uses realistic video created in California, but also combines it with actual footage from Iraq. They make an important point in the article that "...soldiers relate more to human characters than virtual avatars." I would think this is extremely important when it comes to cultural sensitivity, which they are using the simulations for. Bottom line, they are presented with a realistic video depicting a scenario where they must make a choice and then shown the results of their choice. Not a terribly complex design, but probably effective.