Whether you’re a military spouse experiencing frequent moves, find you’re more productive outside an office with four walls, or simply want a more flexible lifestyle; you may be seeking career opportunities that offer portability. You may opt to start your own virtual-based business or become hired by a company offering portability. Careerists can seek out portable employment through various online job search engines.
This article by Sarah Rogers offers a broad-brush of areas of skills/interests that are geared for portability.
I opted for a portable career because as a military spouse I sought more flexibility along with continuity in career. There are also specific resources for Military Spouses such as Military1Source / Portable Career.