I realize this is supposed to be an abstract strategy game, but I was wondering - if you were to translate "turns" into a time scale and the units into actual in-universe numbers of troops, what would your estimation be? With the "building" being more rebuilding or calling things down for a lot of the factions, I wonder if 1 turn = 1 week would be a good guess. As for the units, it's probably different for each, but I'd say for example that a "hero" is really hero + his closest retinue, a space marines units is probably a squad or 2 and not just 5 guys, and with the Orks or Guardsmen the numbers would be even higher.

A hero is just one person and a squad of space marine is 10 but you can attach heroes to squads which would increase their size