3. Placing obstacles and recording ranges.

4. Cover trenches for supports and local reserves.

5. Communicating trenches.

6. Widening and deepening of trenches; interior conveniences.

See [paragraph 568].

MINOR WARFARE.

[596.] Minor warfare embraces both regular and irregular operations.

Regular operations consist of minor actions involving small bodies of trained and organized troops on both sides.

The tactics employed are in general those prescribed for the smaller units.

[597.] Irregular operations consist of actions against unorganized or partially organized forces, acting in independent or semi-independent bodies. Such bodies have little or only crude training and are under nominal and loose leadership and control. They assemble, roam about, and disperse at will. They endeavor to win by stealth or by force of superior numbers, employing ambuscades, sudden dashes or rushes, and hand-to-hand fighting.