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USMC 250 Lecture Series (...

U.S. Marine Corps photo by Gary Montgomery/Released 251209-M-GM999-999.JPG

Jan 12, 2026

Dr. Shawn Callahan, Director of Marine Corps History Division was the second guest lecturer featured in the USMC 250 Lecture Series at National Museum of the Marine Corps. His topic was "The Marine Corps as Defined by its 250-Year Relationship with the U.S. Navy." The seven-part lecture series examines the development of defining cultural traits over the history of the Marine Corps. 9 Dec 2025, Triangle, Virginia.

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IMAGE IS PUBLIC DOMAIN

This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.