During the White Phase of Basic Training or One Station Unit Training Trainees learn how to visually communicate through the use of hand-and-arm signals. Through the use of hand-and-arm signals, flags, pyrotechnics, and other visual aids, messages may be transmitted during combat operations when electrical communications are inadequate or unavailable. Understanding how to efficiently and effectively communicate when remaining concealed is a foundational skill that Trainees will build upon throug

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