Smoke signals used by Indians and Chinese for communication

Native Americans used smoke signals to communicate. They were simple messaging systems used to send basic transmissions over long distances. The only disadvantage was that the enemy could also see them. Smoke signals were also used by Chinese soldiers to convey messages and are still used by boy scouts today. Some common signals used by the Apache Indians included: One puff-something unusual going on, but NO danger; Two puffs-all was well and camp was established; and Three puffs-showed an alarm signal. The attached link includes an article about smoke signals and how to make them. Hope you enjoy it. Mary Ann Reday.

http://adventure.howstuffworks.com/survival/wilderness/how-to-send-smoke-signal.htm