How can someone leverage a degree in healthcare administration in both the military and civilian world?

If you want to be a health administrator on active duty, the best bests are the Navy and the AF. They both have commissioning programs for that field, but their requirements differ though (degree accreditation, work experience, etc.).

I do know many people who have leveraged this type of degree for success in the civilian world, having built off their relevant experience within the military. As with any degree, the range of opportunities will be directly related to the reputation of that degree program and the size of your professional network.