Book excerpt: When most people think of drones, also known as unmanned aerial vehicles (UAVs), they likely think of the military. Militaries have been using drones since the 1990s, and new developments in drone technology are being discovered every day. Readers get a crash course in military drones through this text, which explains the science and technology behind one of today’s most polarizing topics. Readers gain an understanding of how drones work and how militaries use them. The text’s science and technology content support elementary STEM concepts, while simple diagrams, photographs, and fact boxes provide opportunities for additional learning.