Sure, but that isn’t what I’m talking about. You can also tell the factory to build 1 archer, and hit the repeat button, and it will build archers until the game ends. My question is if you request a reinforcement for an army, will the system inject that build request into the endless stream of archers that factory is building.
With the scale of the game, I find it easier to have a set of factories pumping a mix of units continuously to have fodder ready to pair up with dreadnoughts as they come out of production.