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.