Launched in 2013, the journal Unmanned Systems has published more than 200 articles reporting on the state-of-art development in the field. This review volume has selected the 15 best articles of the journal to mark its 10-year anniversary as well as the progress achieved in the field of unmanned systems in the last decade.The articles selected in this celebratory volume cover all subjects related to the development of automatic machine systems in unmanned hardware platforms (aerial, ground, underwater and unconventional platforms), unmanned software systems, energy systems, modelling and control, communications systems, computer vision systems, sensing and information processing, navigation and path planning, computing, information fusion, multi-agent systems, mission management, machine intelligence, artificial intelligence, and innovative application case studies.An analytical review that examines the selected articles under the human cognitive perceptual cycle, to perceive, learn, remember, and think about information is also included in this collection.