0301 - Basic Infantry Officer

            2ndLt - LtCol

The Entry-level 0300 MOS is a Basic MOS that serves as a place holder while entry level Marines complete MOS training.  Enlisted Marines entering the Occupational Field will receive MOS 0300, Basic Infantry Marine, while participating in their respective formal schools.  Marines can enter any of the primary enlisted MOS's in the 03 occupational field.  Most commonly, this is the MOS borne by Marines at The School of Infantry.

To learn more about enlisted career paths, please visit our Enlisted Info section.

To learn more about other MOS's, please visit our Complete MOS List.

If you feel any of this information is inaccurate or incorrect, or have additional resources to inform our audience, please Contact Us.

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