Adam Clarke on 1 Kings 15:22

None was exempted - Every man was obliged to go and help to dismantle the fortress at Ramah which Baasha had built. This was a general levee en masse of the people: every one was obliged to lend a helping hand, as the state was then supposed to be in danger, and all exemptions necessarily ceased. This is a maxim of civil policy, Ubi adversus hostem muniendi sent limites, omnis immunitas cessat: "Where the boundaries are to be fortified against an enemy, then all exemptions cease.