In 1904 the Autochrome was unveiled at the Academy of Science in France, this new photographic technique was a revolution in the world of color photography. Up to that time all color photos were taken by a three plate technique that required lots of time and a subject that did not move. The Autochrome used dyed potato starch that captured a color image in one single exposure. These photos were take in World War 1 and still look pretty good.
World’s Armed Forces Forum
More info on the Autochrome process:
What is an Autochrome?