Career Timeline of George McMillin: Major Achievements and Milestones

By Popular Timelines Editorial Team · Updated: July 17, 2026

Discover the career path of George McMillin, from the first major opportunity to industry-changing achievements.

George J. McMillin (1889–1983) was a career officer in the United States Navy who served as the final Naval Governor of Guam before its fall to Japanese forces during World War II. Following the attack on Pearl Harbor, Guam came under immediate threat. On December 10, 1941, McMillin led the small, largely unarmed insular force in a brief defense against an overwhelming Japanese invasion fleet. Recognizing the futility of further resistance and aiming to spare the local population from unnecessary carnage, he surrendered the territory. McMillin spent the remainder of the war as a prisoner of war in Japan. He is primarily remembered for his difficult leadership position during the early days of the Pacific War and the subsequent occupation of Guam.

Sections (3)

Full Timeline Early Life & Education Career & Achievements

1907: Appointment to the United States Naval Academy

In 1907, George McMillin received his appointment to begin his studies at the United States Naval Academy.

1911: Graduation from the United States Naval Academy

George McMillin successfully completed his education and graduated from the United States Naval Academy in 1911.

March 1919: Assistant Engineer Officer on the USS New Mexico

Starting in March 1919, George McMillin began serving as an assistant engineer officer aboard the USS New Mexico, a position he held until October of that same year.

August 1924: Service in the Office of the Chief of Naval Operations

In August 1924, George McMillin began a tour of duty within the Office of the Chief of Naval Operations, where he served until September 1926.

September 1926: Conclusion of service in the Office of the Chief of Naval Operations

September 1926 marked the end of George McMillin's assignment in the Office of the Chief of Naval Operations, following which he transitioned to become the first lieutenant of the USS Saratoga.

May 1930: Assistant to the Commandant of Midshipmen

Beginning in May 1930, George McMillin served as the assistant to the Commandant of Midshipmen at the Naval Academy while holding the rank of commander.

May 1933: Service with the United States Asiatic Fleet

In May 1933, following his tenure at the Naval Academy, McMillin was attached to the United States Asiatic Fleet to continue his naval service.

1936: Naval War College Attendance

During 1936, George McMillin attended the Naval War College, eventually serving on the staff there for two years after he graduated.

May 1938: Executive Officer of the USS Idaho

Starting in May 1938, McMillin assumed the role of executive officer aboard the battleship USS Idaho, serving in this position until April 1939.

April 1939: Command of the USS Medusa

In April 1939, following his service on the USS Idaho, McMillin took command of the repair ship USS Medusa.

April 20, 1940: Commencement of Naval Governorship

On April 20, 1940, George McMillin officially began his tenure serving as the naval governor of Guam.

October 17, 1941: Completion of U.S. Civilian Evacuation

On October 17, 1941, the evacuation of all non-military United States citizens from the island was successfully completed under the oversight of George McMillin, amidst rising political tensions with Japan. Only one individual, the pregnant wife of the chief commissary steward, remained on the island following this operation.

December 10, 1941: Conclusion of Naval Governorship

George McMillin concluded his term as the naval governor of Guam on December 10, 1941.

June 1949: Retirement from the United States Navy

In June 1949, George McMillin concluded his distinguished naval career by retiring with the rank of rear admiral, marking the end of his service across multiple major global conflicts including World War I and World War II.