Really, what is the point of this suggestion? If it's to make raiding a more viable stratergy, then there are less micromanagement intensive options to acchieve similar effects (citizen soldiers carrying resources get a attack, hp or defense penatly? citizen soldiers take 5 seconds or so to switch from a non-combat to a combat state?). If it's realism, then sorry to disapoint you, but there's only so much realism you can cram into the AoE type RTS framework. And even then, if angling for realism for every male citizen of miltary age you'll have their families, non-citizen freemen and slaves to furfil the economic functions while the citizen-soldier races back home or to the barrack to grab his weapons...