A mercenary force might be capable of getting the job done, but there are one or two teensy legal and ethical problems with their employment as a cursory examination of the UN Mercenary Convention (in full, not the Wikipedia entry), the protocols to the laws of armed conflict and the burgeoning literature over the challenges of regulating Private Military Companies (both in terms of the way their employers use them and their position under status of forces agreements in host nations) demonstrates.
I'm not going to comment further about the rank issue, since the tone of your responses suggests that you're not remotely interested in the answers offered to what wasn't, in fact, a sincere question, but bait.