त्रीणि त्रिकाण्यनीकं रथानामुरस्यं स्थापयेत्तावत्कक्षं पक्षं चोभयतः ॥ कZ_१०.५.१२ ॥
trīṇi trikāṇy anīkaṃ rathānām urasyaṃ sthāpayet tāvat kakṣaṃ pakṣaṃ cobhayataḥ
戦車の陣は三つの三組として配置し、それに応じて前方中央を定め、同様に両側の側面と翼部も配置する。
Modular composition: building a larger array from repeatable triads to simplify control, alignment, and scaling.
To enforce symmetry so that the formation does not develop a structurally weaker wing, which would be exploitable.