John and an old friend still remember lessons from staff rides at Antietam and in the Ardennes. Here's why he takes leaders to battlefields.

At Concord, Gettysburg, the Delaware, and Omaha Beach, the ground itself asks the question. John on learning leadership where it happened.

The 11th Pennsylvania's bull terrier was found guarding their dead on Oak Ridge after Gettysburg. Her bronze likeness still lies there.

On the third day at Gettysburg, Lee sent about 13,000 men across open ground at the Union center. Hour by hour, John walks through Pickett's Charge.