Strategy and tactics are closely related and exist on the same continuum; modern thinking places the operational level between them. All deal with distance, time and force but strategy is large scale, can endure through years, and is societal while tactics are small scale and involve the disposition of fewer elements enduring hours to weeks. Originally strategy was understood to govern the prelude to a battle while tactics controlled its execution. However, in the world wars of the 20th century, the distinction between maneuver and battle, strategy and tactics, expanded with the capacity of technology and transit. Tactics that were once the province of a company of cavalry would be applied to a panzer army.