The president, on his 79th birthday, sat on a special viewing stand south of the White House to watch the display of American military might.

WSJ's senior political correspondent Molly Ball reports from the parade route, where vintage tanks and other military hardware are rolling down Constitution Avenue in Washington.

Coinciding with Trump's 79th birthday, the parade will feature tanks, bands and thousands of troops in honor of the Army’s 250th anniversary celebration.

President Trump is hosting a parade celebrating the 250th anniversary of the U.S. Army on Saturday, bringing tanks and soldiers to the streets of Washington, D.C., for the capital's first major military parade in more than three decades.

"It's really fun, and honestly nerve-wracking," said Jonas Chu, an armored vehicle driver who will appear in the Army's 250th anniversary parade.