In the field of military theory, the operational level of war (also called the operational art, as derived from Russian: оперативное искусство, or the operational warfare) represents the level of command that coordinates the minute details of tactics with the overarching goals of strategy. During the 18th and early 19th centuries, a synonymous term of grand tactics was often applied to describe manoeuvring of troops not tactically engaged, while in the late 19th century and beyond the First World War a term minor strategy was also in use, in fact into the Second World War by some military commentators. The confusion over terminology was brought up in professional military publications that sought to identify "...slightly different shades of meaning, such as minor tactics, tactics, major tactics, minor strategy, major strategy, and grand strategy".