SOI: Camp Lejeune To navigate the Lejeune SOI web site: Use the black tabs in the green area at the top of their web site. You'll find information for your new Marine to check in to SOI under the "Students" tab. You'll find links to MCT and ITB under the "Subordinate Units" tab. The MCT and ITB links (on the left of the "Subordinate Units" page) will take you to the web site for that command and will include links to graduation information. Under the "General Information" tab you'll find driving directions, maps, lodging information and other topics of interest to parents with Marines in training.