Final answer:
OCS applicants must satisfy obligated service requirements upon receipt of OCS orders, which can vary by military branch. Exact service obligations should be confirmed with current military regulations.
Step-by-step explanation:
Officer Candidate School (OCS) applicants must have a certain amount of obligated service remaining on their current enlistment upon receipt of OCS orders. This obligation ensures that the military has sufficient service commitment from the candidate to justify the investment in their training and development as an officer. While specific requirements can vary by branch and over time, individuals should consult the current regulations of their respective military service branch to find the exact obligation required upon receiving OCS orders.