Trump Says Proposed Washington Triumphal Arch Will Double as Military Complex

U.S. President Donald Trump announced on Sunday, September 20, 2026, that a triumphal arch he plans to construct near Arlington National Cemetery in Washington would also serve as a military complex. According to the president, the facility will house drones and snipers, while additionally storing large quantities of ammunition.

Mr. Trump cited national security concerns to justify the move. The rationale echoes arguments previously offered for a roughly $400 million ballroom complex currently being constructed on the site of the White House's former East Wing. However, the president did not identify any specific security threats prompting the decision.

The proposed structure forms part of a broader push by Mr. Trump to reshape Washington, which includes efforts to add his name to the John F. Kennedy Centre for the Performing Arts. These sweeping plans have faced notable criticism from historic preservationists and community groups who argue that the projects risk altering or diminishing established national landmarks.

Detailing the proposal in a social media post, Mr. Trump stated that he agreed to turn the 76-metre arch into a top-grade military complex at the strong request of the military. He noted the facility would be equipped to house, store, and provide the rapid deployment capabilities for large numbers of drones, station snipers on both the roof and plaza areas, and hold large quantities of sniper ammunition.

When contacted by Reuters, a U.S. military official stated that the Defence Department had nothing to add beyond the president's public social media post. The White House did not immediately respond to requests for comment regarding the announcement.

Mr. Trump did not elaborate on why such specialized military capabilities would be necessary at the arch site. His proposed White House ballroom project has similarly been promoted as a drone facility aimed at protecting Washington.

Military experts have questioned the strategic rationale behind incorporating a defense installation into the monument. Mark Cancian, a retired Marine colonel and senior adviser with the Defense and Security Department at the Center for Strategic and International Studies, suggested the military justification appeared tacked on to strengthen support for the construction.

Noting that the arch is planned for a traffic circle near Arlington National Cemetery—roughly a mile from the active Army installation at Fort Myer and approximately 3.2 kilometres from the Pentagon—Cancian told Reuters that the need for a new military site is unclear given existing nearby capabilities. He also pointed out that storing ammunition at the arch would introduce logistical challenges and questioned the tactical value of positioning snipers there.

Legal and regulatory hurdles surrounding the project continue to mount. Earlier in September, U.S. District Judge Tanya Chutkan ordered the Trump administration to provide 48 hours of advance notice before conducting any activity on the triumphal arch site. That ruling followed an announcement by the U.S. Interior Department indicating plans to proceed with work soon, despite ongoing legal challenges and the absence of final approval from a key government planning authority.

Meanwhile, aviation authorities have addressed other aspects of the development. The Federal Aviation Administration stated that the arch would not pose a hazard to aircraft, though it mandated that an eternal flame be placed on top. The clearance removes an aviation hurdle for the monument, which Mr. Trump proposed to mark the nation's 250th anniversary.

Despite the FAA clearance, aviation experts have raised safety concerns due to the structure's proximity to Reagan Washington National Airport. Additionally, military veterans have filed lawsuits seeking to block the arch's construction, arguing that it would permanently destroy the historic sightline between the Lincoln Memorial and Arlington National Cemetery.