Bastille Day celebrations: Marking the 'sign of a friendship between France and the US across the ages'

France's annual Bastille Day parade turned into an event high on American patriotism this year, as it also commemorated the 100th anniversary of America's entry into World War I. French war planes fly over the Arc de Triomphe during the Bastille Day parade in Paris.

US President Donald Trump and his wife were French President Emmanuel Macron's guests of honour this year. Brigitte Macron, wife of Macron, discusses with Trump while U.S. First Lady Melania looks on, prior to the traditional Bastille Day military parade on the Champs Elysees in Paris.

The parade coupled traditional displays of military might with a look at wars past and present — and a nod to the U.S. role in both. French Alpha jets of the Patrouille de France fly over the Champs Elysees avenue, with the Arc de Triomphe in background, during the Bastille Day parade.

U.S troops march down the Champs Elysees avenue, with the Arc de Triomphe in background, during the Bastille Day parade.

Tanks drive down the Champs Elysees avenue during the parade on Friday.

Five of the 145 U.S. troops marching in Friday's parade wore period World War I uniforms. Also in the parade were French soldiers taking part. French soldiers march down the Champs Elysees during the parade.

French Legionnaires march down the Champs Elysees during the parade on Friday.

President Trump and French counterpart Emmanuel Macron are seen on a large screen during Bastille Day parade on the Champs Elysees avenue.

Emmanuel Macron, right, and Donald Trump attend the traditional Bastille Day military parade on the Champs Elysees.

A guest waves French and U.S. flags during the traditional Bastille Day military parade on the Champs Elysees.

Macron, in a speech near the end of the event, thanked the U.S. for intervening in World War I and said the fact that Trump was at his side 'is the sign of a friendship across the ages'.

Emmanuel Macron (third right) and his wife Brigitte (fourth left), with Donald Trump and Melania stand in front of a huge American flag after the Bastille Day parade.