The Army is overhauling how it fights in combat based on lessons from Russia's invasion of Ukraine, where  drones have become the dominant weapon on the battlefield. The service is rethinking tank tactics, procurement systems, and unit structures as inexpensive drones prove more effective than traditional platforms. War Secretary Pete Hegseth issued a directive in July ordering every Army squad to be equipped with unmanned systems by the end of 2026. Army Chief of Staff Gen. Randy George said