I don't see the Army as having lost its approach to training during or after Vietnam. The schools I went to during my service from 1977 to 1984 taught standard combined arms with an emphasis on armor and mechanized infantry. The airborne and air assault guys emphasized their own operational techniques. Those were the days when Bill DePuy and Don Starry ran TRADOC, the active defense and all that. With unconventional wars being our most likely challenge during the next several decades, I'm trying to understand how we should go about maintaining our core competencies in combined arms while we're simultaneously facing unconventional adversaries.