OSO: Officer Selection Officer
Marine recruiters come in two categories: generic “Recruiters” usually refers to those serving the Enlisted Marine pipeline. An “Officer Recruiter” is an OSO, or Officer Selection Officer. He works out of an OSO…the Officer Selection Office.
How to Contact an OSO
This is where the confusion comes from. You might find OSO contact information online or at your college, but it’s often out of date. The Marine Corps’ official solution is for an OSO to contact you. Simply fill out the form on the official site, and the appopriate OSO (or recruiter) should reach out to you.
Recruiting Station Lookup
Another option is to look for your local recruiting offices and try to call your nearest OSO directly. If you’re in a rush, this might be the fastest way to track down an OSO.