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