Oblique order
Frederick described his technique: "a commander should strengthen one wing of his army and employ it to attack the enemy flank, while holding back another, smaller wing to threaten the enemy’s main force and keep it from changing position." The other army was already in place and could not switch their troops around fast enough before the Prussians attacked. Frederick went on to say: "an army of 30,000 could beat an army of 100,000 using this method."