Military Base in Space

Countries ambition on opening military bases on the extremes of the world made me thing of other alternatives such as mobile replenishment ships. However, land has so many advantages over ships. Then I thought of space, a military base in space. Unlike Earth, a mobile base made more sense compared to a base on land such as the Moon. The reasoning was simple. It required much more energy to deploy something on land compared to something on orbit.

The payloads reach very high speeds in space. Orbit insertions also require high speeds. Therefore, the speed gained can be conserved. On the other hand, payload to be deployed on the Moon requires the speed to drop to zero. This deceleration requires so much energy therefore a lot of propellant. This leaves much less room for the payload.

Bases on land make more sense if the resources on land can be utilized. However, rocket propellant cannot be produced on the Moon. The setup would require so much energy that it would make more sense to deploy propellant externally like in the case of bases on Earth. However, they can source water at least where the Moon also lack.

Bases on land would have better protection with underground structures. However, excavating on the Moon requires a lot of energy and equipment. Also keep in mind that Moon has no protective atmosphere against the asteroids. Protecting a base against such constant threads requires more weight and energy. On the other hand, an orbiting base can avoid asteroids with its propulsion system. 

How would a military base in orbit would look like? A hedgehog.