9.23

Chapter: The Army on the March 9.23
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Translation:

When there is dust rising in a high column, it is the sign of chariots advancing; when the dust is low, but spread over a wide area, it betokens the approach of infantry. When it branches out in different directions, it shows that parties have been sent to collect firewood. A few clouds of dust moving to and fro signify that the army is encamping.

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Commentary

When the ground is dry, men and machines will kick up dust and send signals that can be seen many miles away.

Learn to read the distant signs of different types of activity.