Simulations are a critical aspect of United States military training. Commercial computer games are a growing part of our entertainment industry. The two fields have much in common, and the military can learn from the successful experience of the commercial sector. J.C. Herz provides an industry look at gaming technology and culture and suggests ways in which commercial experience can be applied to the military. Michael Macedonia responds to Herz’s analysis and provides a military gamer’s perspective on computer games and the military.