For every soldier carrying weapons on the fromt line, there are like 9 or 10 in support. There are many jobs which can be outsourced to the 'kelly girls' of the military support world.
Once the conflict is resolved, the career of the temp is up to whoever the subcontractor is, not the DoD or the VA.
But just like somebody who outsources their taxes the IRS goes after the taxpayer, not HRBlock.