Mashable has posted a gallery of pictures which they claim depict secret military vehicle tests performed by General Jean Baptiste Eugene Estienne.  Taken in 1919, the photos show a crawler style tractor  transporting tourists up the slopes of Mont d”Arbois in Megeve, France.  Several of the photos include a uniformed officer said to be General Estienne, who was using the tourists as a way to disguise the true nature of the vehicle tests, which were to evaluate the vehicles for military purposes.  The vehicles tested were built by the well know French auto companies Renault and Peugeot.

The photo gallery may be viewed here.