21. Italian soldiers climbing a mountain on the Italian Front, 1915.
22. Austro-Hungarian Emperor Karl I speaking with Jewish Rabin and other members of the Jewish community in the city of Tarnopol, Austrian Galicia (now Ukraine) immediately after the city was reconquered from the Russians, WWI, 30 July 1917.
23. Cosmonaut Alexei Leonov during the first Spacewalk, 1965.
24. U.S. Navy pilots, including future President Gerald Ford on the left, playing basketball in the forward elevator well of the USS Monterrey, circa June 1944.
25. Ceasefire on Eastern Front of WWI, Russian and Austro-Hungarian soldiers meeting across the barbed wire on the front line, December 1917.