Book excerpt: This essay is a brief history of the U.S. army during the years immediately following the Korean War. For many in our own time that period-corresonding to the two terms of the Eisenhower presidency-has acquired an aura of congenial simplicity. Americans who survived Vietnam, Watergate, and painful economical difficulties wistfully recall the 1950s as a time when the nation possessed a clearly-charted course and had the will and the power to follow it.