The Collaborative International Dictionary of English v.0.48:

Marshal \Mar"shal\, v. t. [imp. & p. p. Marshaledor
   Marshalled; p. pr. & vb. n. Marshaling or Marshalling.]
   [1913 Webster]
   1. To dispose in order; to arrange in a suitable manner; as,
      to marshal troops or an army.
      [1913 Webster]

            And marshaling the heroes of his name
            As, in their order, next to light they came.
                                                  --Dryden.
      [1913 Webster]

   2. To direct, guide, or lead.
      [1913 Webster]

            Thou marshalest me the way that I was going. --Shak.
      [1913 Webster]

   3. (Her.) To dispose in due order, as the different
      quarterings on an escutcheon, or the different crests when
      several belong to an achievement.
      [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

marshalling

    (US -ll- or -l-) The process of packing one
   or more items of data into a message buffer, prior to
   transmitting that message buffer over a communication channel.
   The packing process not only collects together values which
   may be stored in non-consecutive memory locations but also
   converts data of different types into a standard
   representation agreed with the recipient of the message.

   (2000-06-09)