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Signal operating instructions

From Quire, the open reference·U.S. military term·1 min read

Signal operating instructions (SOI) or Communications-Electronics Operation Instructions (CEOI) are U.S. military terms for a type of combat order issued for the technical control and coordination of communications within a command.[1] They include current and up-to-date information covering radio call signs and frequencies, a telephone directory, code-words (for rudimentary encryption), and visual and sound signals. A designated battalion signal officer prepares the battalion SOI in conformance with the SOI of higher headquarters.[2] During operations, SOI are changed daily. Since the fielding of the SINCGARS system, however, the paper SOI has generally faded from Army use. Electronic SOI are now generated, distributed and loaded along with cryptographic keys.[3]

The title SOI was used until the early 1970s and it was changed to CEOI and then changed back to SOI in the 1980s.

References#edit

  1. ^ http://webapp1.dlib.indiana.edu/cgi-bin/virtcdlib/index.cgi/4240529/FID5/pdfdocs/jel/cjcs/6230_03.pdf
  2. ^ "Appendix S: Communications and communications security". globalsecurity.org. Retrieved 28 September 2019.
  3. ^ Al Walton (2005). "AKMS update: army key management system". Army Communicator. Archived from the original on 17 February 2008. Retrieved 30 August 2022.
Categories Key managementMilitary radio systemsMilitary terminology of the United States

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