व्यूहं तु स्थापयित्वा पक्षकक्षोरस्यानामेकेन द्वाभ्यां वा प्रहरेत् शेषैः प्रतिगृह्णीयात् ॥ कZ_१०.५.४८ ॥
vyūhaṃ tu sthāpayitvā pakṣakakṣorasyānāmekena dvābhyāṃ vā praharet śeṣaiḥ pratigṛhṇīyāt
After establishing the battle-array, he should strike with one—or two—of the wing, flank, or chest (front) divisions; with the remaining divisions he should hold/receive (the enemy attack).
Commit only part of the force for the decisive blow while the remainder stabilizes the line—an early expression of economy of force and reserve employment.