One unique feature of the expected space service is that more than half of its personnel are expected to be civilian workers, Harrison said. The other services only have a civilian workforce that account for 10 to 36 percent of size. “It would be a more civilian-heavy service than any of the others,” he said.

https://www.govexec.com/defense/2018/11/space-force-actually-may-be-bargain-new-cost-estimate-says/152952/?oref=channelriver-featured