British military origin. In Armed Forces terms, this formal order is a specific command sometimes issued in a case where the strategic situation has become hopeless, the collapse of a force is imminent, and there is no chance of relief. Once given, the order suspends certain aspects of military discipline, allowing each individual to surrender, flee, or continue fighting independently according to their individual
circumstances, without regard to previous battle orders. It also means that the parent force is declaring itself free of any duty to continue to provide further supplies, medical aid or tactical support for the forces who receive this order.
While troops may be freed from the requirements of normal battle discipline, they are still obligated not to engage in treasonous conduct, cross over to aid the enemy, or act with disgrace while a Prisoner of War.
Note: The
United States military does not currently
use this order, however it was occasionally employed by both sides in the
American Civil War if a unit lost all cohesion due to being overwhelmed in close-quarter fighting.