The parade will start at 6:30 p.m., with soldiers starting their march to the parade route from the Pentagon in Northern Virginia, and heavy vehicles staged from West Potomac Park in Washington. The soldiers will then proceed to the National Mall, past the Lincoln Memorial to Mr. Trump’s review stand near the White House.

The military parade commemorating the U.S. Army’s 250th anniversary and coinciding with Donald Trump’s 79th birthday will be a new spectacle for many Americans.