IN late June, Gen. Stanley A. McChrystal, the former commander of international forces in Afghanistan, called for reinstating the draft. “I think if a nation goes to war, every town, every city needs to be at risk,” he said at the Aspen Ideas Festival. “You make that decision and everybody has skin in the game.”

This was the first time in recent years that a high-profile officer has broken ranks to argue that the all-volunteer force is not necessarily good for the country or the military. Unlike Europeans, Americans still seem determined to maintain a serious military force, so we need to think about how to pay for it and staff it by creating a draft that is better and more equitable than the Vietnam-era conscription system.

A revived draft, including both males and females, should include three options for new conscripts coming out of high school. Some could choose 18 months of military service with low pay but excellent post-service benefits, including free college tuition. These conscripts would not be deployed but could perform tasks currently outsourced at great cost to the Pentagon: paperwork, painting barracks, mowing lawns, driving generals around, and generally doing lower-skills tasks so professional soldiers don’t have to. If they want to stay, they could move into the professional force and receive weapons training, higher pay and better benefits.

Those who don’t want to serve in the army could perform civilian national service for a slightly longer period and equally low pay — teaching in low-income areas, cleaning parks, rebuilding crumbling infrastructure, or aiding the elderly. After two years, they would receive similar benefits like tuition aid.