Laying down a line on the ground just captured from the Germans (4688648870)

Laying railway lines, during World War I. A group of soldiers in the foreground stand on top of railway tracks which are waiting to be assembled by the group working ahead.
Military railways were constructed hastily by the advancing army. They were essential for transporting supplies and provided much-needed lines of communication.
[Original reads: 'Laying down a line on the ground just captured from the Germans.']

http://digital.nls.uk/74545878