3. As an adjunct to tree and brushwood entanglement.
4. As a wire entanglement.
5. As a covering for portable cylinders.
The advantages of the barbed-wire entanglement are:
1. It is easily and quickly made.
2. It is difficult to destroy.
3. It is difficult to get through.
4. It offers no obstruction to the view and fire of the defense.
The low wire entanglement is constructed as follows:
1. Drive stakes in the ground until they project about 18 inches. The stakes should be about 6 feet apart, those in each row being opposite the intervals in adjacent rows.