![File:841st Engineer Battalion U.S. Army Reserve combine efforts with 194th Engineer Brigade Tennessee Army National Guard at Operation Resolute Castle 160705-A-CS119-001.jpg - Wikimedia Commons File:841st Engineer Battalion U.S. Army Reserve combine efforts with 194th Engineer Brigade Tennessee Army National Guard at Operation Resolute Castle 160705-A-CS119-001.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/0/05/841st_Engineer_Battalion_U.S._Army_Reserve_combine_efforts_with_194th_Engineer_Brigade_Tennessee_Army_National_Guard_at_Operation_Resolute_Castle_160705-A-CS119-001.jpg)
File:841st Engineer Battalion U.S. Army Reserve combine efforts with 194th Engineer Brigade Tennessee Army National Guard at Operation Resolute Castle 160705-A-CS119-001.jpg - Wikimedia Commons
![RTO - "Radio telephone operator (Army) or RO-radio operator (Marines). The person working the radio, usually either in a combat maneuver element or at the TOC (see below)." by AcronymsAndSlang.com RTO - "Radio telephone operator (Army) or RO-radio operator (Marines). The person working the radio, usually either in a combat maneuver element or at the TOC (see below)." by AcronymsAndSlang.com](http://acronymsandslang.com/acronym_image/2574/f4ebe702da151564c4133ca867142713.jpg)
RTO - "Radio telephone operator (Army) or RO-radio operator (Marines). The person working the radio, usually either in a combat maneuver element or at the TOC (see below)." by AcronymsAndSlang.com
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