Whoops, exactly right. The war zone comment is covered below but most service people meet the 2 year requirement. Off of the "RCI" website;
"Veterans with an Honorable Discharge serving a minimum of 2 years, or 6-months in an active war zone, in any of the United States service divisions listed above. Proper identification in the form of a DD 214, plus a current photo must be presented at time of check-in."