Your hired soldiers will become your feudal masters in short order.
Unless you castrate them in infancy, then breed them up as warriors. Then they will be loyal, having no heirs.
Hello EP and other replies,

Thxs for responding.  I never said this would be easy.  Yes, it is quite likely that the Earthmarines will become the eventual feudal masters, but they should be smart enough to realize that it will be counter-productive to kill the hand that feeds them.  Far better to maintain an outward defensive focus until the invasive threat subsides.

As Ted Koppel speculates: [see LATOC news & upates for this essential article] it is far more likely that large biosolar habitats will arise from the profit-oriented drive of international consortiums meeting detritus entropy.  The '3 Days of the Condor' scenario run to its max. profit REAL BIOSOLAR WEALTH conclusion.  Consider: biosolar 'Monsantoland', 'GazPromisedLand', 'XOMobiland', etc as inevitable results.

The overriding concern is if the full-on nuclear gift exchange can be avoided-- a big IF-- but corporate powers, which transcend geographic borders, will do their best to prevent this because noone profits.

In my mind, it is easy to forsee corporate IPOs where the farmers pledge their land & labor in exchange for inclusion into the creation of large and distinct corporate biosolar habitats whereby the corps' accumulated wealth is used to optimize and expand sustainability.  'Cargilland', for example, could quickly arise in the American Heartland to stem the massive throngs leaving the denuded Southwest, similar to the Gretna sheriffs preventing Nawlins residents from crossing the freeway bridge.  It is only logical, as the first order of business, is to prevent the swamping of a 'land lifeboat'.  Corp entities can finance and equip Earthmarines far longer than the disassociated and disorganized detritovores caught in entropic decline.

Once a distinct habitat is created, a similar project to Zimbabwe's "Taking out the Trash" can be commenced to outsource any non-additive economic drags.  Sad.  =(

But I would prefer wholesale mitigation and cooperation to all of the above.  Hopefully an astounding breakthrough will come out of the upcoming G8 Energy Security conference.  Time will tell.

Bob Shaw in Phx,AZ  Are Humans Smarter than Yeast?