A mentor of mine, a superb scholar, once told me that good defense analysis starts with a trade-off. The classic example is combined arms doctrine, which is the foundation of modern warfare. Infantry, armor, artillery, and aviation work together to offset each other’s weaknesses. Each brings a combination of mobility, firepower, or protection, though none individually has all three. Infantry has a lot of mobility, but little protection. Tanks have mobility and a lot of protection, but limited magazines. Artillery in the rear has nearly limitless firepower, but no protection. Aviation brings speed, reach, and firepower, but little staying power,The post Cogs of War Turns One appeared first on War on the Rocks.