"As a retired Marine you may be ordered to active duty without your consent."

What is odd about the Corps is that when you leave active duty between 20 and 30 you are not 'retired' but instead placed in the Fleet Marine Corps Reserve. A similar paragraph appears in your orders to the FMCR. Then after you hit 30 years from initial enlistment you get your big certificate and retired pin.

Course not long after 9/11 I tried to enlist in the NG but was told by the recruiter I no doubt had an RE-2 code on my DD214, which I do, and it means "Ineligible for reenlistment. Recommended for reenlistment but ineligible because of status: Fleet Reservist Retired." So they'll bring back a 75 year old but brush off a then motivated 40 something year old. Go figure.