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The practice of using code names traces back to the post-World War II era, evolving alongside the development of the Secret Service and its protective measures for high-profile individuals. The first president to receive a code name was Harry S. Truman, whose nickname was "General." Since then, most presidents and their families have been assigned distinctive code names that reflect either personal traits or sometimes even their physical characteristics.

Notable Code Names Over the Decades

Throughout the last 80 years, a variety of memorable code names have been used:

• John F. Kennedy received the code name "Lancer," reflecting a youthful and dynamic persona.

• Ronald Reagan was known as "Rawhide," a nod to his cowboy image and early acting career.