A Royalist Reading

I was taken back by George Will's assertion on This Week that Jim Webb's law to make troop at-home time as long as deployments was unconstitutional. A little googling reveals that John McCain is making the same claim:

"Where in the Constitution of the United States does it say that the Congress decides how long people will spend on tours of duty and how long they will spend back in the United States? It's blatantly unconstitutional," McCain said. "The Constitution of the United States said Congress will declare wars and fund wars."

Will and McCain need to re-read Article 1, Section 8. The following power is explicitly granted to Congress:

To make Rules for the Government and Regulation of the land and naval Forces

There is no ambiguity here.