British loading pontoon boats with ammunition

Photograph shows British Royal Artillery gunners loading pontoon boats on the River Scarpe with shells near a light railway engine passing on the line near Saint-Laurent-Blangy, France, April 22, 1917 during the Battle of Arras in World War I. (Source: Flickr Commons project, 2015 and similar image on the Imperial War Museums website: http://www.iwm.org.uk/collections/item/object/205215536)
Title from data provided by the Bain News Service on the negative.
Photograph taken by Lieutenant John Warwick Brooke.
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