![](http://www.alamy.com/thumbs/6/DE4448AA-E929-4F5A-950F-20C51B6AF243/2RCK78R.jpg)
Corporal K. Polk of the 302nd Field Battalion, is seen operating the French system of switching railroad bars using turntables in Byon, France during World War I. The photograph was taken on September 21, 1918, by an unidentified photographer. No additional information such as the date of issuance and censor is available.
Size: 8419px × 5680px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No
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