The Collaborative International Dictionary of English v.0.48:

March \March\, v. i. [imp. & p. p. Marched; p. pr. & vb. n.
   Marching.] [F. marcher, in OF. also, to tread, prob. fr. L.
   marcus hammer. Cf. Mortar.]
   1. To move with regular steps, as a soldier; to walk in a
      grave, deliberate, or stately manner; to advance steadily.
      --Shak.
      [1913 Webster]

   2. To proceed by walking in a body or in military order; as,
      the German army marched into France.
      [1913 Webster]