The US Bradley Fighting Vehicles were visible on the horizon as they raced toward the city. Smoke, deployed to conceal movement, formed wisps around the outskirts. Assault forces, preparing to storm the enemy stronghold, gathered on the northern edge, navigating barbed wire, cars, and concrete blocks — enemy obstacles meant to slow the assault down.

The urban assault, part of a simulated conflict against a formidable peer adversary, followed days of combat.

The US Army exercise tested soldiers on moving through a city caught in conflict, pushing them to clear streets and buildings while fighting. The fight also had another layer. Though not at…