When is the earliest and latest an Officer can apply to attend MARSOC Assessment and Selection (A&S)?

As a First Lieutenant, you must have a minimum of two observed fitness reports (minimum 540 fitness report days) and be in zone for promotion prior to submitting your application.  As a Captain, you must begin the Individual Training Course (ITC) with no more than 24 months’ time in grade as a Captain. For First Lieutenants who are in a deployable unit, if you meet the requirements listed above, it is recommended that you attend A&S between your first & second deployment.