The Collaborative International Dictionary of English v.0.48:

Martinet \Mar"ti*net`\, n. [F.] (Zool.)
   The martin.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Martinet \Mar"ti*net`\, n. [So called from an officer of that
   name in the French army under Louis XIV. Cf. Martin the
   bird, Martlet.]
   In military language, a strict disciplinarian; in general,
   one who lays stress on a rigid adherence to the details of
   discipline, or to forms and fixed methods. [Hence, the word
   is commonly employed in a depreciatory sense.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

martinet
    n 1: someone who demands exact conformity to rules and forms
         [syn: martinet, disciplinarian, moralist]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "martinet":
   Simon Legree, absolute monarch, absolute ruler, all-powerful ruler,
   arrogator, autarch, autocrat, caesar, commissar, czar, despot,
   dictator, disciplinarian, driver, duce, hard master, oligarch,
   oppressor, pharaoh, slave driver, stickler, tyrant, usurper,
   warlord