CEOI
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Note: the WWII version of this is SOI-
Signal Operations Instructions
Subcourse AR 0121 - Armor Communications Procedures
- Discusses communications processes and the use of the CEOI in armor units
- Communications Electronics Operating Instructions
- The Automated "CEOI"
- 31 December 1975
Signal Subcourse 068 Division Signal Orders and Reports
- Discusses Use of the CEOI