The United States has relied on an all-volunteer army since 1973 , when the military draft was abolished. But at age 18, all American men are still required to register with the Selective Service, the federal agency responsible for implementing a draft. That's in case the government decides that a draft is once again necessary to maintain America's fighting force.

Is the U.S. better served by an all-volunteer military or should everyone serve the country?

Remember Economist, the response should include the economic aspect of the question, such as:

• How benefits?
• What are some of the opportunity costs for individuals?
• What are some of the opportunity cost to society?
• How would a draft affect the market in terms of supply and demand?
• Could a draft benefit the economic or GDP?