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See How U.S. Marine Corps Officers Lead in Battle

U.S. Marine Corps students with Company D, Basic Officer Course 4-25, The Basic School, participate in the Warfighting Field Exercise at Marine Corps Base Quantico, Virginia, Nov. 17- Nov. 20, 2025.
Sergeant Major of the Marine Corps Carlos Ruiz is 50 and still trains with Marines worldwide. Here's how he trains to stay ...