Order of battle

Definition and stakes

Portrait of William Jennings Bryan William Jennings Bryan The World's Famous Orations (1906)

What calamity could they call down upon us, so much to be dreaded, as a turbulent and factious spirit, and all the evils of discord and sedition?—that the soldier should refuse to obey his centurion; the centurion his tribune; and that hence the cavalry and the foot soldiers, without order or distinction, should rush into destruction? It is implicit obedience rather than wrangling about orders, that gives to military operations their energy. The army that shows itself in time of peace the most quiet and orderly, is sure to be the most formidable in the day of battle.
Source: Wikisource

baron de Antoine Henri Jomini The Art of War

From the nature of the two things, it is evident that the line of battle belongs especially to defensive arrangements; because an army awaiting an attack without knowing what or where it will be must necessarily form a rather indefinite and objectless line of battle. Order of battle, on the contrary, indicating an arrangement of troops formed with an intention of fighting while executing some maneuver previously determined upon, belongs more particularly to offensive dispositions.
Source: Gutenberg

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