Signal flags performed a imperative position in verbal exchange at some point of battles; they allowed comm

https://deanmwsm217.wordcanopy.com/posts/the-impact-of-civil-war-flags-on-soldier-morale-and-identity-3

Signal flags played a needed position in verbal exchange in the time of battles; they allowed commanders to relay orders over lengthy distances whilst verbal calls had been useless with the aid of noise.