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See also: a4 and A4



A-4 (plural A-4s)

  1. (military) Skyhawk single engine attack aircraft.
  2. (military) Air material and supply officer.
    • 2001, Today's Logistics:
      Deployed to a provisional air base squadron as the LG and serving as an A-4 officer...
  3. (military) Material and supply section of an Air Force staff.
    • 1944, AAF The Official Guide To The Army Air Forces:
      A-4 or S-4, performs all staff functions pertaining to supply and maintenance.