War and Conflict. World War I. pic: September 1916. France The Irish Brigade going back to a rest area after taking Guillemont on the Fricourt-Maricourt road. [Getty Images]

War and Conflict, World War I, pic: September 1916, France The Irish Brigade going back to a rest area after taking Guillemont on the Fricourt-Maricourt road (Photo by Popperfoto via Getty Images/Getty Images)

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