पत्तयोऽश्वा रथा हस्तिनश्चानुपृष्ठमचलः ॥ कZ_१०.६.४० ॥
pattayo 'śvā rathā hastinaś cānupṛṣṭham acalaḥ
Dalam formasi ‘Acala’, infantri, kavalri, kereta perang dan gajah disusun berturut-turut, satu di belakang yang lain (mengikut kedalaman).
It simplifies command by clear sequencing of echelons and enables staged reinforcement—units can be committed in order as conditions evolve.