Source : Webster's Revised Unabridged Dictionary (1913)

Strategy \Strat"e*gy\, n. [Gr. ?: cf. F. strat['e]gie. See
   {Stratagem}.]
   1. The science of military command, or the science of
      projecting campaigns and directing great military
      movements; generalship.

   2. The use of stratagem or artifice.

Source : WordNet®

strategy
     n 1: an elaborate and systematic plan of action [syn: {scheme}]
     2: the branch of military science dealing with military command
        and the planning and conduct of a war