President Donald Trump celebrated the "fighting spirit and unyielding force" of the American military in remarks following a parade in Washington, D.C. commemorating the 250th anniversary of the armed services that saw a grand showing of the military's power throughout the National Mall.

The massive military parade that President Donald Trump has long wanted is set to step off from the Lincoln Memorial on Saturday evening, with tanks, bands and thousands of troops.

Trump's critics have raised concerns over the cost of the event.