How does the U.S. military train its soldiers for new forms of armed conflict, all within the constraints of diminished defense budgets? Increasingly, the answer is cutting-edge video game technology. Corey Mead shows us training sessions where soldiers undertake multiplayer missions that test combat skills, develop unit cohesion, and teach cultural awareness. He immerses himself in 3-D battle simulations so convincing that they leave his heart racing. And he shows how the military, which has shaped American education more than any other force over the last century, fuels the adoption of games as learning tools - and recruitment come-ons. Mead also details how the military uses games to prepare soldiers for their return to the home front and to treat PTSD. Military-funded researchers were closely involved with the computing advances that led to the invention of the Internet. Now, as Mead proves, we are poised at the brink of a similar explosion in game technology. War Play reveals that many of tomorrow's teaching tools, therapies, and entertainments can be found in today's military.