The only effective solution to the manpower crunch is the one America has turned to again and again in its history: the draft. Not the mass combat mobilizations of World War II, nor the inequitable conscription of Vietnam—for just as threats change and war-fighting advances, so too must the draft. A modernized draft would demand that the privileged participate. It would give all who serve a choice over how they serve. And it would provide the military, on a “just in time” basis, large numbers of deployable ground troops, particularly the peacekeepers we'll need to meet the security challenges of the 21st century.
America has a choice. It can be the world's superpower, or it can maintain the current all-volunteer military, but it probably can't do both.
It's gonna dazzle ya how much good shit is Below The Fold.