In the terms of modern warfare, electronic warfare being the most up-to-date sphere included in information warfare, is based on establishing dominance of electromagnetic spectrum. It is defined as the fundamental element in communications, completely accountable for wireless data transmission. Whilst conducting combat operations, radio connections and tactical radio systems are crucial component in information transmittal, which is a proof as they are constantly under electronic attacks. Updating and improving oneself's knowledge about signals together with adequate training on radio systems, enhances electronic activities and usage of electronic warfare's methods which significantly improves overall effort of allied forces on the battlefield. Establishing radio connections, implementation of electronic attack, electronic defense and electronic support, planning and carrying out training on radio communications, synchronously being state-of-the-art in modern radio technologies, offers Croatian Army various capabilities in electronic warfare. Consequently, it puts Croatian Army on the competent stage of conducting military operations.