Guns and Tanks…
By 
My latest at the National Interest:
The focus of ground combat operations has shifted dramatically since the end of the Cold War. Relatively few operations now involve the defeat of a technologically and doctrinally similar force, leading to the conquest or liberation of territory. Preparation for these operations remains important, but ground combat branches also have a host of other priorities, some (including counter-insurgency and policing) harkening back to the origins of the modern military organization.
What will the balance of ground combat power look like in 2030, presumably after the Wars on Terror and the Wars of Russian Reconsolidation (more to come on this idea below) shake out?