This episode traces the Marine Corps' transformation from the late 1800s into the modern force recognized today. It begins with the creation of Parris Island and the evolution of Marine training, from tents and marshland to a world-class recruit depot tested by war, tragedy, and reform.
The story moves through Panama, where Marines became America's instrument of order, and into the age of steel ships and global ambition. It follows their battles in Cuba, the Philippines, and across Central America during the Banana Wars, where the Corps learned the lessons of small wars, air-ground coordination, and constabulary duty.
Figures like Charles Heywood, John A. Lejeune, and Smedley Butler emerge as the architects of a professional, expeditionary force. By the time the last Marines left Nicaragua in 1933, the Corps had been reshaped, no longer a naval guard but a global instrument of American power, forged in hardship and defined by purpose.
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