Over the past four years, the FiWiN5G Innovative Training Network has been training and educating the next generation of early stage researchers (ESRs) who will enable Europe to take a leading role in the development of future devices, systems and networks supporting the 5G high-speed wireless internet. The researchers employed by the network have been undertaking research projects concerning next generation devices to enable photonic based mm-wave communications; systems, sub-systems and functionalities for signal processing; and system demonstrations of advanced mm-wave communications. Through a comprehensive programme of secondments, exchanges and training the ESRs have been educated to understand the broad context of their work, whether it is systems/network engineers understanding the devices and technologies that make up the networks or device engineers understanding the networks in which their devices will function. To do this they have been exposed to world-leading partners, selected for their complimentary and excellence and expertise from industry’s to ensure an understanding of the key application areas of the technologies in this area.