Col. Thibault Vallette, of the Cadre Noir de Saumur, carries the Olympic torch during the Bastille Day parade Sunday in Paris. The Olympic flame is lighting up the city’s grandiose Bastille Day military parade. It’s 12 days before the French capital hosts exceptionally ambitious and high-security Summer Games. (AP photo)

PARIS — Paris hosted an extra-special guest for France’s national holiday Sunday — the Olympic flame lighting up the city’s grandiose military parade for Bastille Day.

Just 12 days before the French capital hosts exceptionally ambitious and high-security Summer Games, the torch relay joined up with thousands of soldiers, sailors, rescuers and medics marching in Paris beneath roaring fighter jets.

While people around France mark the day with concerts, parties and fireworks, here’s a look at what the holiday’s about, and what’s different this year:

What does Bastille Day celebrate?

On July 14, 1789, revolutionaries stormed the Bastille fortress and prison in Paris, heralding the start of the French Revolution and the end of the monarchy.

The holiday is central to the French calendar, with events across the country. It aims to embody the national motto of ”liberty, equality and fraternity,” though not everyone in France feels the country lives up to that promise.

The Paris parade is the holiday’s highlight. This year, it paid tribute to those who freed France from Nazi occupation 80 years ago, with a re-enactment of the D-Day landings of June 6, 1944, and a presentation by service members from the 31 countries whose troops contributed to the liberation. About half are African nations that were under French colonial rule during World War II.

Who takes part?

Some 4,000 people and 162 horses marched in the tightly choreographed show, among them units that served in NATO missions in eastern Europe, against Islamic extremists in the Sahel, protecting French territories in the South Pacific and global shipping corridors. They were joined this year by three German officers from a cross-border brigade.

The ornamental uniforms are rich in symbolism — most notably those of the French Foreign Legion sappers, with long beards, leather aprons and axes from their original role as route-clearers for advancing armies.

Overhead, 65 aircraft flew in formations, including a British Typhoon fighter alongside French Mirages and Rafales, rescue helicopters and aircraft used in missions from Afghanistan to Mali or international drug busts.

President Emmanuel Macron kicked Sunday’s events off with a review of the troops.

Military bands and choirs played an important role, performing a medley of French military songs, American jazz tunes, a Scottish bagpipe ballad — and the Marseillaise.

The numbers are scaled back compared with previous years, because of Olympics security measures. Around 130,000 police are deployed around France for the holiday weekend.