विभवो यावदङ्गानां चतुर्णां सदृशो भवेत् ॥ कZ_१०.५.५७च्द् ॥
vibhavo yāvad aṅgānāṃ caturṇāṃ sadṛśo bhavet
So far as resources allow, the strength of the four army limbs should be kept proportionate.
A bounded-optimization rule: balance is ideal, but force design must remain constrained by fiscal and logistical capacity.
Overweighting one arm creates exploitable vulnerabilities; proportionality supports flexibility across terrains and enemy tactics.