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Note: the WWII version of this is SOI - Signal Operations Instructions

Adobe_PDF_icon.png Subcourse AR 0121 - Armor Communications Procedures
Discusses communications processes and the use of the CEOI in armor units

Adobe_PDF_icon.png TC 24-2
Communications Electronics Operating Instructions
The Automated "CEOI"
31 December 1975

Adobe_PDF_icon.png Signal Subcourse 068 Division Signal Orders and Reports
Discusses Use of the CEOI