The digital collection Stereoscopic images of World War I has been created by Yale University Library. The stereoscopic photographs and some 200 other photographs are part of the Darrot papers (Yale University Library, MS 591). Paul Jean Gaston Darrot (1892-1958) served with the French infantry, the artillery and the communication service of the engineers; most of the pictures stem probably from this period. The images were mainly taken in France, some after the First World War. A blog post from 2013 by Andrew Berger (Manuscripts and Archives Department, Yale University Library) provides some background to this digital collection. You can only see the original double images, there is not an animated version or a red-cyan 3D version. There is also an online finding aid for the photographs in the Darrot papers.