The foregoing Instructions can only be considered as a sketch of the duties of the Light Cavalry. The young, yet inexperienced soldier may look upon it as an introduction to his duties; he can only expect to acquire accomplishments by his own reflections and exertions. AN ABRIDGMENT OF COLONEL ARENTSCHILDT'S INSTRUCTIONS TO OFFICERS AND NON-COMMISSIONED OFFICERS OF LIGHT CAVALRY; BY LIEUT.-COLONEL THE HON. F. PONSONBY, Twelfth Light Dragoons. INSTRUCTIONS FOR OFFICERS AND NON-COMMISSIONED OFFICERS OF CAVALRY, ON OUTPOST DUTY. PICQUET. 1. The Officer commanding a Picquet should have the Names and Regiments of the men written down: he should inspect their arms and Ammunition; he should see that they are provided with Provisions and Forage, and should thoroughly understand the Orders which he receives. 2. On the march to where the Picquet is to be stationed, the country should be examined, and the places where a stand could be made in case the Picquet should be attacked, ought to be particularly observed. It is of the utmost importance to give the corps time to turn out, and the Commander of a Picquet who retires at full speed, with the Enemy at his heels, deserves the severest punishment. He must retire as slowly as possible, and constantly skirmish. 3. Upon arriving at the spot chosen for the Picquet, the Officer should ascertain the number of Videttes necessary, by observing the roads and hills in front; he should then place them in such a manner that they can each see what is coming towards the Picquet, and at the same time observe one another. In the mean time the Picquet should dismount, placing one Sentry a little in advance; and as soon as the Videttes are placed, two-thirds of the Picquet may unbridle. The Officer should make a little sketch, marking the roads, rivers, bridges, or fords, morasses, cavities, hollow roads, mountains, woods, towns, villages, and their distances. An officer cannot feel confident for the security of his post, unless he has acquired an exact knowledge of the country. 4. The principal rules for posting a Picquet at night, are to advance it two or three miles in front of the main body, behind a bridge, ravine, wood, or bog, through which the road may pass, to place Videttes in front, and on the flanks, and to send out Patrols of two or three men each at half an hour's interval. Sometimes a man should dismount and listen with his ear to the ground, by which means he will hear the march of Troops at a great distance. This precaution is necessary in stormy weather. Upon coming by night to a new spot, Patrols should be sent out in every direction before the Videttes are placed. 5. If the Enemy is near, no fire should be lighted, the post should be frequently changed, one-half of the Picquet should be mounted, one hundred yards in advance, and the other half should keep the bridles in their hands.