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.

Americans are planning to demonstrate against President Donald Trump across the U.S. on Saturday as a counterpoint to the 200,000 people expected to attend the military parade in Washington.

The parade, honoring the Army’s long-planned 250th anniversary celebration and coinciding with Trump’s 79th birthday, is set to step off from the Lincoln Memorial under the threat of stormy weather in Washington and protests around the country tied to a turbulent week of immigration enforcement that has involved military deployment in Los Angeles.

It's among the starkest examples yet of President Donald Trump flexing his role as commander-in-chief since taking office.

The parade is expected to include about 6,600 soldiers, 50 helicopters and 60-ton M1 Abrams battle tanks, as well as possibly 200,000 attendees and heightened security to match.

The Army expects as many as 200,000 people to attend the parade that honors the U.S. Army’s formation and coincides with Donald Trump’s birthday.

The event is expected to draw hundreds of thousands of attendees, the Secret Service said, drawn to the rare spectacle of military hardware and soldiers filing down American streets.

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.