Combining the bases in the middle of New Jersey was a way to keep them open after the Defense Department's last round of base closures and realignments.
The idea is to share more services to save costs.
It also means a name change for Dix. The post has been a major wartime mobilization and demobilization center since World War I.
More than 77,000 troops headed for Iraq and Afghanistan since 2001 have passed through there.
Get Action News on your website
Follow Action News on Facebook
Click here to get the latest Philadelphia news and headlines from across the Delaware and Lehigh valleys.