The phrase has been uttered so often, it’s become a well-worn cliché—Freedom Isn’t Free. But even though it’s been said countless times before, those words continue to ring true. And it’s the men and women of America’s armed forces who are there to pay the price.

From the battles of Lexington and Concord to the recent conflicts in Iraq and Afghanistan, over 1.3 million Americans have been called upon to make the ultimate sacrifice. Millions more have been left scarred and crippled in the service of their country.

Unlike the monarchies of 18th century Europe, with their professional armies and hired mercenaries, America was different. From the start, our military was based on the concept of the citizen soldier. It speaks to the heart of who we are as a nation.

Although the days of the farmer casting aside his plow and picking up a rifle are long gone, and a strong standing army has become a modern necessity, American soldiers still carr...