The Collaborative International Dictionary of English v.0.48:

Dragonnade \Drag`on*nade"\ (dr[a^]g`[o^]n*n[=a]d"), n. [F., fr.
   dragon dragoon, because Louis XIV., in persecuting the
   Protestants of his kingdom, quartered dragoons upon them.]
   The severe persecution of French Protestants under Louis
   XIV., by an armed force, usually of dragoons; hence, a rapid
   and devastating incursion; dragoonade.
   [1913 Webster]

         He learnt it as he watched the dragonnades, the
         tortures, the massacres of the Netherlands. --C.
                                                  Kingsley.
   Dragon's head
   Dragon's blood