Lieutenant John F. Kennedy served in the United States Navy during World War II. He commanded the PT-109, a patrol torpedo boat, in the Pacific Theater. His leadership and bravery were highlighted when his boat was sunk by a Japanese destroyer, and he helped rescue his crew despite serious injuries. After the war, Kennedy entered politics and eventually became the 35th President of the United States. His experiences as a naval officer influenced his views on military and foreign policy. Kennedy is remembered for his inspirational speeches and significant events during his presidency, including the Cuban Missile Crisis.