At night the Videttes must be relieved every hour and visited every half hour. The Videttes should at all times be double if possible. In foggy weather, and when it is very dark, the double Videttes should patrol among themselves, and communicate with one another. When the Enemy is near, the following measure contributes not only to security, but is the best method of knowing when the enemy is on the move: A few men should patrol during the night beyond the chain of Videttes in different directions, and as near the enemy as they can unperceived; they should then dismount and listen with the ear to the ground.
10. Every person attempting to pass the Outpost must be detained till the morning. After the morning Patrol has returned, or has reported that all is well, the Picquet should take up its position for the day.
11. Videttes should be placed by day on a high ground, so as to have an extensive view, but if possible near a rock or tree, so as not to be perceived by the Enemy; when the Videttes are placed in such a manner that they can overlook their front, see each other and the ground between them, so that nothing can pass unperceived, they are placed as they ought to be.
12. By night, Videttes are taken off the hills and placed on the roads, behind fords, bridges, ravines, &c.; they should be placed at the bottom of hills, so that any object moving at the top would be easily perceived. They should by no means be advanced further than that their firing can be distinctly heard by the Picquet.
13. When a Vidette observes anything suspicious on the side of the Enemy, such as the glittering of arms, rising of dust, &c., he is to move his horse round in a circle at a walk; the Officer should instantly proceed with a Corporal and four men to the Vidette; and examine with his glass, or by a Patrol, thoroughly into the cause, after which he must make his report. If the Vidette observes Troops marching towards him, but at a great distance, he is to ride the circle in a trot; the officer acts as in the former case. If the Enemy should approach the Vidette at no great distance, he is to ride the circle at a gallop. The Officer should advance with his whole Picquet; his further duty is prescribed in Par. 15. If the Enemy is so near the Videttes that they are obliged to gallop to the Picquets for their own security, they should fire their Carbines or Pistols. By night, if the Videttes hear a suspicious noise, even at a great distance, such as the rattling of Carriages, barking of dogs, or if they observe any fire, one of them should instantly report the circumstances to the officer of the Picquet, in order that it may be inquired into by a Patrol. If any one should approach the Videttes, they must challenge, and desire the person or persons to halt till the Officer is informed. Should the person refuse to halt, being twice challenged in a loud voice, the Vidette is to fire. Great caution must be observed by night if a Deserter should come from the Enemy, the Videttes must not let him approach too near; they must make him halt till the Officer comes up. By day, the Vidette is to make a signal to the sentry of the Picquet, should a Deserter approach, and a party will be immediately sent to receive him.
FLAG OF TRUCE.
14. No person coming from the Enemy with a Flag of Truce, is to be allowed to advance farther than the chain of Videttes. When the Vidette makes the signal, the Officer of the Picquet should meet the Flag of Truce with four more, and desire the bearer to halt, if possible, in a bottom, as the intention is frequently only to make observations on the position of the Picquet, in order to attack it at night. If the bearer only brings Letters, a receipt is to be given to the bearer and sent back; but if he insists upon being allowed to proceed, further instructions must be obtained from the Officer commanding the Outposts. A Flag of Truce ought to be treated with the utmost civility, but no conversation relative to the Army is to be permitted.
15. When a Picquet is attacked, the Officer is immediately to communicate with the Picquets on his flank, and with the main body; he is then to throw out his skirmishers, and if obliged to retire, it must be done as slowly as possible, to gain time for the corps to turn out. If the commander of the Picquet should have fixed upon places where to make a stand, (as recommended in Par. 2,) he will find the advantage; if it be a bridge, ford, or ravine, he should act in the following manner: upon approaching the place, suppose a bridge, he should gallop over it with his Picquet, and form with his right flank to the Enemy, taking care to leave the passage open. The skirmishers immediately after gallop over, and form directly fronting the passage of the bridge, and to the rear of the Picquet; the Enemy must necessarily halt, in order to drive the Picquet away by their fire; consequently, time is given to the main body, which is the grand object. If the Picquets on the flanks should not be attacked at the same time, they should endeavour, without exposing themselves to be cut off, to act upon the Enemy's flanks. In general, it is a rule for the Picquets not attacked to retire in a line with those engaged.