An RTO (Radio Telephone Operator) is one of the most important roles in a unit. Without a radio the unit has no information. Without information a unit is useless. That’s why the RTO communicates with other elements. Most of the time it will be comms between squads, assets and the HQ but an RTO is often tasked with calling in supports such as artillery fire or coordinating helicopter transport and MED/CASEVACs.

A JTAC (Joint Terminal Attack Controller) is often a part of a TACP (Tactical Air Control Party) responsible for controlling all air activity and air support in an AO. In Arma JTACs are usually attached to infantry squads and are responsible for guiding in CAS to support the ground element. JTACs are also capable of calling in artillery support, transport and MED/CASEVACs.

The base knowledge of any RTOs or JTACs work should be how to take care of their radios as otherwise they are useless. In Arma it means knowing how to squeeze everything out of your radio by knowing every feature it has, but also knowing it’s limitations. For basic radio information check out the guide I made on it, but remember that skill comes with experience.