HISTORICAL PAPER DIM-2020-U-027242-1RevAugust 2021Numbered Fleet Operations in the Current and Future Environments:Analytical Insight from Past Fleet Operational Experience Peter M.Swartz CNA Historical Paper Series CNA publishes documents in its Historical Paper Series to highlight previously unpublished works with historical perspectives that may be of use to current and future researchers.The content of this paper is current through its initial writing in 1996.It is presented in its original format.DISTRIBUTION STATEMENT A.Approved for public release:distribution unlimited.