The Army may need smaller operational formations to adjust to future fighting in urban environments, according to the service's chief of staff. ''If, in fact, future war will be largely fought in urban terrain, what's the so what?'' Gen. Mark Milley said, speaking at the Future of War conference March 21 in Washington. He noted the Army has been ''optimized for 241 years to fight in rolling terrain, rolling hills, northern hemisphere'' and is ''suboptimized for urban capabilities.'' ''[W]e're going...