Yep Knights could travel with quite the retinue minstrels, priests huntsmen... squires could be bossing a page or two... Pendragon covered Arthur quite nicely and Chaosium's Glorantha had White Bea &r Red Moon, Nomad Gods, and Dragon Pass scaling up
Talents imply warfare pretty directly as well as planed supplements and then of course Lords of the Underearth and Dragons also and this was Metagaming....
Plus the scale bumps allow some non-combat progression and yada yada yada so why not when it's optional
As far as chariots, carts, and similar it's generally 80 to 90% of the population engaged in agriculture to feed everybody before You start ticking production times which can really eat up the resources on material heavy stuff ergo a primary reason for outfitting spears over swords
Longbowmen used up all the native yew something like halfway through their effective span and a sort of import tax of yew was collected while especially large musters could result in a lack of geese for days of travel in any direction from the muster point