Working German gun against Russians

Photograph shows German soldiers with machine gun during World War I. (Source: Flickr Commons project, 2012)
Title from data provided by the Bain News Service on the negative.
Photograph by Alfred Kühlewindt who was allowed to enter the battlefield as a war photographer in the fall of 1914. (Source: Flickr Commons project, 2012)
Forms part of: George Grantham Bain Collection (Library of Congress).
General information about the George Grantham Bain Collection is available at http://hdl.loc.gov/loc.pnp/pp.ggbain