Lieutenant Lender and Paul Heldelberg present the "Piloteur" to the Invention Department's Technical Aeronautic Committee. Using this device, which is anchored to the ground, student pilots can learn...
In a field, soldiers, officers, civilians, and Jules-Louis Breton, members of the Invention Department Committee, study different types of machine guns designed to be fired at tanks.
The Higher Invention Committee studies several pamphlet distribution tactics.
The Higher Invention Committee examines the Chilowsky shrapnel to increase the power of projectiles.
A group of officers and civilians attends the assembly and test-firing of the 240mm Trench Mortar.
The Invention Department's aeronautic technical committee and Edmond Rothé place an electric-oscillation anemometer under an elongated tethered balloon with low cubic volume. The method uses only one...
The Department of Inventions, Studies, and Technical Experiments organizes the de-mining of a large amount of unexploded shells from the war at the Suippes military camp, settled on the ruins of the T...
Aboard a small boat pulled by a tugboat in the Toulon harbor, Jules-Louis Breton and some members of the Invention Department Technical Engineering Committee try out underwater goggles to find a subma...