The Automatic Digital Network System, known as AUTODIN, is a legacy data communications service in the United States Department of Defense.
[2] The design of the system, originally named "ComLogNet", began in 1958 by a team of Western Union, RCA and IBM.
During the implementation the government realized the broader value of the system and transferred it to the Defense Communications Agency (DCA) which renamed it "AUTODIN".
This system linked more than 300 Air Forces bases, material areas, depots and other authorized agencies into a single communications network.
In 1982, a follow-on project, AUTODIN II,[3] was terminated in favor of using ARPANET technology for the Defense Data Network (including a military subnet known as MILNET).