Even as the Department of Defense renovates some of its 145 golf courses, the Army acknowledged in a new Pentagon study on excess capacity that it owns at least six facilities labeled “Golf Club House and Sales” that almost no one uses. The Navy owns at least two more golf facilities that it listed as underutilized.

But the problem goes far beyond golf courses. The Pentagon oversees some $4.1 trillion in assets and 26.7 million acres of land — a sprawling network of military installations across the United States and the globe. Wasted space and resources in that network could be squeezing taxpayers out of billions of dollars.