Combat is not for the faint of heart, it's not for the weak-kneed, it's not for those who are not psychologically resilient and tough and hardened to… - Mark A. Milley

Globally, there's an increase in nationalism and authoritarian governments, regional arms races and unresolved territorial claims, ethnic and sectarian disputes and an attempt by some countries to return to an 18th-century concept of balance of power politics with spheres of influence.

You're entering a different world. The United States is under significant challenges in Europe, Asia, the Middle East and Europe. We see revanchist Russia, as we have just witnessed another invasion in Ukraine. In Asia, we are in the third decade of the largest global economic shift in 500 years, resulting in a rapidly rising China as a great power with a revisionist foreign policy backed up with an increasingly capable military.

In your world, you're going to have to optimize yourselves for urban combat, not rural combat. That has huge implications for intelligence collection, vehicles, weapons design, development, logistics, camo and all of the other aspects of our progression.