US troops took part in a military parade marking the annual Bastille Day and 100th anniversary of the US' entry into the First World War on the Champs-Elysees in Paris on July 14. /CFP Photo

This year’s Bastille Day parade has dual symbolism. France’s most important holiday, July 14 marks the storming of the Bastille prison in 1789, which helped spark the French Revolution. This year's parade also commemorated the 100th anniversary of the United States' entry into World War I. /CFP Photo

US President Donald Trump joined French President Emmanuel Macron to view the spectacle. /CFP Photo

The French government traditionally invites a country of honor to lead the parade, which is linked to a historical event and highlights a symbolic gesture of friendship. /CFP Photo