“It occurred to me that if I could invent a machine - a gun - which could by its rapidity of fire, enable one man to do as much battle duty as a hundred, that it would, to a large extent supersede the necessity of large armies, and consequently, exposure to battle and disease [would] be greatly diminished.”
― Richard Jordan Gatling, 1877
But imagine the efficiencies to be gained if you swapped out the direct human operator with an automated operator. Then, you can have teams of automated operators being operated by a single human!