Escape à dos

In Neuf-Brisach, escape game in a rucksack!
1940 Neuf-Brisach is occupied by the Germans. When the soldiers are counted, it turns out that Major Dupont, a musician by profession, is missing. As he was a key figure in the garrison, the Germans were desperate to find him before he could warn the other regiments that the town had been taken. The Kaiser summons you to the Place d'Armes and instructs you to find him as quickly as possible, otherwise you will be taken to the firing squad as traitors.
Are you a small group of 4 to 6 people who would like to discover the town and its fortifications in a totally new and innovative way? We suggest you set off with a rucksack. You'll have to look around you, solving clues and puzzles that will open a padlock at each stage. QR code solutions will be available to help you stay independent.