समविषमनिम्नस्थलह्रस्वदीर्घवशेन वाध्वनो यात्रां विभजेत् ॥ कZ_०९.१.५१ ॥
samaviṣamanimnasthalahrasvadīrghavaśena vādhvano yātrāṃ vibhajet
その日の行軍は、道の性質——平坦か不整か、窪地があるか、区間が短いか長いか——に応じて分割(計画)すべきである。
To institutionalize terrain-based scheduling: the march is not fixed by calendar alone but apportioned by road conditions to reduce fatigue, delays, and disorder.
Operational planning using route risk/effort profiling—adjusting movement rates by terrain and segment length.