John English is a cabinetmaker, a teacher, and the author of "How to Choose and Use Bench Planes and Scrapers," "The Woodworker's Guide to Sharpening," and many articles published in "Woodshop News" and "Woodworker's Business News." He is the former editor of "Today's Woodworker" and "Woodworker's Journal." Currently he designs and builds projects for "American Woodworker" magazine and runs the Black Hills School of Woodworking. He lives in Spearfish, South Dakota.
BRUCE I. GUDMUNDSSON is a military historian who studies the way that modern armies adapt to radical change in their operating environments. He divides his time between historical research and assisting present-day military organizations with their own attempts to innovate.