स एव पक्षकक्षाभ्यां प्रतिक्रान्तो दृढकः ॥ कZ_१०.६.१० ॥
sa eva pakṣakakṣābhyāṃ pratikrānto dṛḍhakaḥ
That same array, when drawn back/offset with respect to the wings and flanks (pakṣa-kakṣa), is termed ‘Dṛḍhaka’ (a tightened/firmed disposition).
It prioritizes holding power and controllability—shorter forward exposure reduces coordination burden and strengthens the line against shock.