Found this interesting article about how photography played an essential role to the Mexican Revolution.
Images played a key role, since media started to let aside the portraits of people from the upper class, to start to show the real state of a society and the matters of the country.
The Graflex is an example of a reflexsystem light camera patented in 1903 by Rochester Company.
Easy to carry, about 4 kilos, the same as a Mauser gun, could be packed in a bagpack, same the militaries used to carry their militar and personal utencils. The Graflex could take a broader shoot making also a little different the perspective which made the picture more realistic and atractive:
As an example, people riding, or up on a train, thanks to the effect of the new panoramic system, made it feel more real than ever before.
With this camera, images of federal soldiers in combat and on their base camps, were inmortalized, as well as the artillery they use, the faces of higher rank generals, every day scenes and even of disseases the suffer such as malnourish.