Dufour, Guillaume Henri (gēyōmˈ äNrēˈ düfōrˈ) [key], 1787–1875, Swiss general. He served in the French army under Napoleon I, and in 1847 he led the Swiss federal forces to victory against the Sonderbund. A noted cartographer, he was also the author of several military treatises and histories. Dufour presided over the first Geneva Convention, which established (1864) the International Red Cross.
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