Kautilya's Arthashastra 2.33.9

2.33.9

ted eva senāpatiḥ sarvayuddhapraharaṇavidyāvinīto hastyaśvarathacaryāsaṃghuṣṭaś caturaṅgasya balasyānuṣṭhānādhiṣṭhānaṃ vidyāt //

With an eye to the position which the entire army (chaturangabala) trained in the skillful handling of all kinds of weapons and in leading elephants, horses, and chariots have occupied and to the emergent call for which they ought to be ready, the commander-in-chief shall be so capable as to order either advance or retreat (áyogamayógam cha).