21. The Soviet Union, 1986.
Liquidators clean the roof of the No. 3 reactor after authorities realized robots were unable to function due to the radiation levels.
22. The top is the Cameron Highlanders battalion in 1914, before being sent to the front. The bottom is them after the armistice of 1918.
23. A Fiat diesel train on the Mogadishu-Villabruzzi railway, 1930.