It does if you dig a little deeper. You have a pool of jobs that require some level of all the mentioned skills/attributes. That pool contains some for civilian positions and for the military. If the candidate pool is shrinking for both, you have increased competition. Civilian positions will pay more because they can, and they generally require less recruiting due to the better conditions. The military needs to ramp up recruiting, increase waivers, etc to meet the same force requirements.

It's all inter-related. The main cause is a lower eligible pool of candidates, due to many different issues.