Groundbreaking for The Pentagon

On September 11, 1941, construction began on the Pentagon in Arlington, Virginia. The building would become the headquarters of the United States Department of Defense and one of the world's largest office buildings. Its rapid construction reflected the urgency of World War II.

Historical Context

By mid-1941, World War II was raging in Europe and Asia, though the United States had not yet entered the conflict. President Franklin D. Roosevelt's administration anticipated the need for a massive, centralized military headquarters to coordinate the rapidly expanding armed forces. The existing facilities in Washington, D.C., were overcrowded and scattered. In July 1941, Brigadier General Brehon B. Somervell proposed a new building to consolidate the War Department. A site in Arlington, Virginia—formerly occupied by the Washington-Hoover Airport and a racetrack—was chosen for its proximity to the capital. The project was approved despite concerns about its size and cost.

What Happened

Groundbreaking took place on September 11, 1941, with initial excavation and foundation work. The design, by architect George Bergstrom and contractor John McShain, called for a five-sided structure with five concentric rings, a shape chosen to fit the irregular site and minimize walking distances. The building was to have five floors above ground and two below, with a total floor area of about 6.5 million square feet. Construction proceeded at a breakneck pace, employing over 15,000 workers. The first occupants moved in on April 30, 1942, and the building was completed on January 15, 1943, at a cost of $83 million. It was dedicated on January 15, 1943.

Significance & Legacy

The Pentagon became a symbol of American military power and a central hub for defense policy during World War II and the Cold War. It housed the Department of War (later Defense) and the Joint Chiefs of Staff, coordinating military operations worldwide. Its unique design and massive scale made it an architectural and engineering marvel. Over the decades, it has been the site of major historical events, including protests during the Vietnam War and the September 11, 2001, terrorist attack, which struck the building and killed 184 people. Today, it remains the world's largest low-rise office building and a lasting icon of U.S. military strength.

Conclusion

The groundbreaking for the Pentagon on September 11, 1941, marked the beginning of one of the most ambitious construction projects in American history. Completed in record time, the building has served as the nerve center of U.S. military operations for over eight decades. Its legacy is intertwined with both the nation's triumphs and tragedies, standing as a testament to American resolve and organizational capability.