"Visual Signaling" by the United States Army Signal Corps is a military manual written in the early 20th century. This work serves as a comprehensive guide covering various methods of visual signaling utilized by the Army, specifically focusing on techniques, equipment, and protocols essential for effective communication during military operations. At the start of the manual, a brief introduction discusses the enduring significance of visual signaling despite advancements in electrical communication technology. It emphasizes the necessity for trained personnel and proper equipment, as visual methods remain vital in situations where other communication means are ineffective. The opening portion outlines basic concepts of visual signaling, including definitions, classifications, and the importance of visual signals in military contexts. Various signaling methods such as flags, heliographs, lanterns, rockets, and semaphores are introduced, laying the groundwork for more detailed instructions on their respective uses and operations in subsequent chapters. (This is an automatically generated summary.)