You don’t “maintain stable social relationships” with the whole horde, you maintain them with your small unit. And the military hierarchy exists so that people have to coordinate only a limited number of entities: if you’re a grunt, you need to coordinate only with people immediately around you; if you’re a mid-level officer you coordinate a limited number of platoons, if you’re a general you coordinate a limited number of regiments.
A soldier does not meaningfully “co-work” with the whole army.
You don’t “maintain stable social relationships” with the whole horde, you maintain them with your small unit. And the military hierarchy exists so that people have to coordinate only a limited number of entities: if you’re a grunt, you need to coordinate only with people immediately around you; if you’re a mid-level officer you coordinate a limited number of platoons, if you’re a general you coordinate a limited number of regiments.
A soldier does not meaningfully “co-work” with the whole army.