Should any one get confused and stray, which he can't do if he keeps his head, he must shout till he hears his shouts answered.

After a time if he doesn't hear any answer he must fire his gun, and we must answer till he rejoins us.

But if my orders are observed I do not see how any one can miss their way, as there will be posts stationed every fifty yards.

You remain till the last and see them all before you.

You quite understand?
When each man comes up to the one in front of him he is to stop until the next man joins him, and then move on to the man ahead." "I understand, sir." "They must not be in a hurry, sergeant; because moving ahead as I shall, I shall have to move to the right or left sometimes so as to make as sure as I can that I am still going down.