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An Operations Order, often abbreviated to OPORD, is a plan format meant to assist subordinate units with the conduct of military operations. An OPORD describes the situation the unit faces, the mission of the unit, and what supporting activities the unit will conduct in order to achieve their commander's desired end state. Normally an OPORD is generated at the regimental, brigade, divisional, or corps headquarters and disseminated to its assigned or attached elements. The issuance of an OPORD triggers subordinate unit leadership to develop orders specific to the role or roles that the unit will assume within the operation. This more narrowly focused order borrows information from the original, or base, order (for example; weather, phase lines, radio frequencies, etc.) and adds additional details that pertain more to the minutiae of the actions a unit is tasked to conduct in support of the overarching operation. A standardized five paragraph order format is used by the United States Department of Defense and most other military forces. An OPORD is formatted to organize an operation into five easily understood paragraphs: Situation, Mission, Execution, Sustainment (formerly Service and Support, currently referred to as Admin & Logistics by the US Marine Corps), and Command and Control. Higher echelon's OPORDs often contain extensive details. The author of the order will often move the majority of this material to an annex or appendix. These are then issued alongside the base order. The annexes and appendices allow the OPORD to be more easily read and understood by encouraging the inclusion or removal of material after its relevancy to the order's end user is determined. ==Variations== The OPORD is the primary means by which a unit commander and his or her staff deliver instructions and information to subordinate units regarding the missions they are tasked to undertake or support. It is not the only type of order that may be issued for a mission. Other types tell units that an OPORD may be forthcoming, a Warning Order or WARNO, or to inform units that one or more elements of the base order have changed, this type of order is referred to as a Fragmentary Order, or FRAGO. Time and circumstances permitting, a WARNO is issued to subordinate leaders immediately after receipt of the unit's mission from higher. This is meant to allow subordinates time to develop their own Warning and Operations Orders based off information contained within the WARNO. Once an OPORD is given, the situation may change before the mission begins, or, during the operation the situation may change so that the base order must be modified. In these cases the commander will issue a FRAGO. The FRAGO follows the same format as the base order and only states the changes that must be made. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「operations order」の詳細全文を読む スポンサード リンク
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