Defensive Obstacles
Just as modern military engineers enhance field fortifications with obstacles such as barbed wire, Medieval engineers used a number of obstacle types including abatis, caltrops, cheval de frise, and trou de loup.
Read more about this topic: Medieval Fortification
Famous quotes containing the words defensive and/or obstacles:
“Stay-at-home mothers, . . . their self-esteem constantly assaulted, . . . are ever more fervently concerned that their offspring turn out better so they won’t have to stoop to say “I told you so.” Working mothers, . . . their self-esteem corroded by guilt, . . . are praying their kids turn out functional so they can stop being defensive and apologetic and instead assert “See? I did do it all.””
—Melinda M. Marshall (20th century)
“Life is like walking along a crowded street—there always seem to be fewer obstacles to getting along on the opposite pavement—and yet, if one crosses over, matters are rarely mended.”
—Thomas Henry Huxley (1825–95)