Millions of American soldiers have marched in military parades since the Civil War, which marked the tradition as a fundamental ritual of American unity.

Trump celebrates the U.S. Army's 250th birthday with a parade in Washington D.C., honoring its history and veterans.

Fox News Digital spoke to attendees of the D.C. military parade, some who had traveled hundreds of miles to participate, about why they had come to the nation’s capital for the event.

On Saturday (January 14), mass protests against President Donald Trump took place across the US at the same time as a military parade in Washington D.C. for the Army’s 250th anniversary, which also fell on Trump's 79th birthday.