Dr. Shawn Callahan - Semper Fidelis - USMC 250th Anniversary Book
Feb 23, 2026
52:12
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In this episode of Preble Hall, Dr. Shawn Callahan, Director of the Marine Corps History Division at Marine Corps University, discusses their recently published work, Semper Fidelis: 250 Years of U.S. Marine Corps Honor, Courage, and Commitment.
