The Federal Signal Service at Antietam

This book sheds light on a vital yet often overlooked aspect of the Union's Civil War efforts, focusing on the role of signal communications during the Maryland Campaign. Through primary sources and detailed analysis, it highlights how young officers used flags and telescopes to provide real-time intelligence, challenging the myth of the "spectator general." The study combines operational insights with personal portraits of the men behind these crucial communications, emphasizing their importance in shaping command decisions.