Italian troops take part in a Nationalist victory parade in Madrid on May 19, 1939. Military aide from Italian dictator Benito Mussolini helped Gen. Francisco Franco win the Spanish Civil War.
Len Putnam/Associated Press
Soldiers care for the wounded on the first day of the Battle of Passchendaele on July 31, 1917. Fought in West Flanders, Belgium, Passchendaele was one of the war's most costly clashes.
Imperial War Museum, London