Battalions of the Ninth Marine Regiment, but not the regiment itself, were reactivated from 2007 to 2014 as part of the Marine Corps' growth during the wars in Iraq and Afghanistan. The battalions have subsequently been deactivated again.
From 2007 to 2014, battalions within the Ninth Marine Regiment were reactivated by the Marine Corps for their involvement in the wars in Iraq and Afghanistan, though the regiment itself was not revived. These battalions have since been deactivated once more.