If under fire, have units march at proper intervals (Cf. [par. 117ff].)
Adopt marching order best suitable to avoid blocking the road.
At night do not allow smoking.
Exact silence when nearing the trenches.
Take special precaution at all times to maintain constant communication between units, especially at night and when crossing woods.
If enemy aeroplanes appear, stop and keep out of sight as much as possible. (Cf. [par. 120].)
5.—On reaching the trenches:
The relief should be completed in silence—without hurry.
Carefully ascertain the orders of the battalion relieved.