The Armée de Terre launched their Bastille Day Défile aircraft from Chartres airport, and from there, they joined the 2024 flypast over Paris. As I have said, the 2024 flypast was different, and the aircraft flew along Avenue Foch due to the preparations for the Olympic Games.
Below is a record of the preparation and launch on Sunday morning, July 14th, which coincided with Bastille Day.

An early Sunday morning, July 14th, arrival at Chartres airport.
5544/AYM AS555UN EALAT Armée de Terre.

5544/AYM AS555UN EALAT Armée de Terre.
As the launch time approaches, all engines are started, including the air spares for all types. The first Vanguard is the PC6s, heading for the runway.

F-HBKR/R EC120B Colibri from Helidax at Dax.
5544/AYJ AS555UN.
MCE prepares to roll.
It's getting congested.
The second wave is away.
Turning East for Paris.
Use the link to see the fixed-wing section of the flypast, which was practised at
Bricy Airbase earlier in July.
Great weather made for some Happy memories.