National Defense: Test in the Field

North of Tennessee's meandering Duck River, where rolling meadows and woods break sharply into commanding hills, 55,000 U.S. fighting men last week worked at war. A few weeks before, frank General George Marshall had said that the U.S. Army was still in the high-school stage. In Lieut. General Ben Lear's Second Army, three divisions were far enough along in their courses to be sent to the Tennessee laboratory to show what they had learned, and study further in the hard school of field maneuver.

Last week, after ten days of set exercises in the 600-mile-square area south of Nashville, they met in...