"Instructions for Officers and Non-Commissioned Officers of Cavalry, on Outpost Duty" by Lieut.-Colonel Von Arentschildt is a comprehensive military manual written in the early 1860s during the American Civil War. This instructional publication is aimed at officers and non-commissioned officers of cavalry units, detailing procedures and guidelines for effective outpost duty, which includes the management of picquets, advanced guards, and patrols. The work serves as a practical resource for ensuring readiness and strategic positioning in military operations. The book provides a detailed account of the responsibilities and conduct expected of cavalry personnel on outpost duty. It covers various aspects such as the formation and inspection of picquets, the importance of reconnaissance, and the signaling between videttes (lookouts). Guidelines for both day and night operations are outlined, emphasizing vigilance and preparedness in the face of potential enemy attacks. The manual highlights the significance of maintaining communication, conducting patrols, and taking measures to ensure the security and efficacy of cavalry operations, all while underscoring the necessity for discipline and thorough training among officers and their troops. (This is an automatically generated summary.)