योजनमधमा अध्यर्धं मध्यमा द्वियोजनमुत्तमा सम्भाव्या वा गतिः ॥ कZ_१०.२.१२ ॥
yojanam adhamā adhyardhaṃ madhyamā dviyojanam uttamā sambhāvyā vā gatiḥ
The expected marching rate may be: one yojana (low), one-and-a-half (medium), or two yojanas (high), as feasible.
To standardize planning while allowing commanders to adjust tempo to terrain, supply, fatigue, and threat conditions.