Dufour was born on 15 September 1787 in Konstanz,[1] where his parents from Geneva were living in exile for their involvement in the Revolution of 1782.[2] He was the son of Bénédict Dufour, a watchmaker, and Pernette Valentin.[2] When he was two years old, his parents were allowed to return to Geneva,[2] where Dufour attended school and studied drawing and medicine. In 1807, Dufour travelled to Paris to join the École Polytechnique, then a military academy. He studied descriptive geometry under Jean Nicolas Pierre Hachette, and graduated fifth in his class in 1809, going on to study military engineering at the École d'Application in Metz.[2]
Career
In 1811, Dufour joined the French Army and was sent to help defend Corfu, in the French Ionian Islands, where he mapped the island's old fortifications.[1][3] He was wounded in action in June 1813 during a naval battle against the British.[2] By 1814, he had attained the rank of captain,[3] and was awarded the Cross of the Légion d'Honneur for his work repairing fortifications at Lyon. In 1817, he resumed his status as a Swiss citizen, and returned to Geneva to become commander of the Canton of Geneva's military engineers,[2] as well as a professor of mathematics at the Academy of Geneva. From 1819 to 1830 he was chief instructor in the military school of Thun, which had been founded mainly through his efforts. Among other distinguished foreign pupils he instructed Louis-Napoleon Bonaparte, nephew of the former Emperor.[4]
In 1827 he was raised to the rank of colonel, and commanded the Federal army in a series of field manoeuvres. In 1831 he became chief of the staff, and soon afterwards he was appointed quartermaster-general. Two years later the Federal Diet commissioned him to superintend the execution of a complete trigonometrical survey of Switzerland. He had already made a cadastral survey of the canton of Geneva, and published a map of the canton on the scale of 1⁄25000. The final map in 25 sheets on the scale of 1⁄100000 was published at intervals between 1842 and 1865.[4][1]
In 1847 the Catholic cantons of Switzerland attempted to form a separate alliance of their own, known as the Sonderbund, effectively splitting from the rest of the country. The Federal Diet appointed Dufour General on 21 October 1847,[2] and he led the federal army of 100,000 and defeated the Sonderbund under Johann-Ulrich von Salis-Soglio in a campaign that lasted only from 3 to 29 November, and claimed fewer than a hundred victims. He ordered his troops to spare the injured. For example, on November 13, 1847, when everything was ready for the offensive, he sent Lieutenant de Cerjat as an emissary to the authorities of the city of Fribourg enjoining them to surrender in order to avoid a deadly battle.[5][6] With his mindful approach in the Sonderbund War, Dufour not only prevented a collapse of the Confederation through intervention by foreign powers, but he also created a basis of reconciliation that enabled the cantons to agree on a common federal state already in 1848. His success, and the moderation with which he treated his vanquished fellow-countrymen, were acknowledged by a gift of 60,000 francs from the Federal Diet and various honours from different cities and cantons of the confederation.[4]
In 1850 the mountaineer and topographer Johann Coaz served as his private secretary.[11]
In 1863 he was part of a committee with Gustave Moynier, Henry Dunant, Louis Appia and Théodore Maunoir that discussed Dunant's ideas for the creation of a voluntary care organization for the assistance of the wounded in battle. Dunant's vision and the committees work ultimately led to the foundation of the International Red Cross.[citation needed] The following year he presided over the international conference which framed the First Geneva Convention as to the treatment of the wounded in time of war.[4]
On 16 July 1875, 60,000 persons participated at Dufour's burial at Cimetière de Plainpalais in Geneva.
Saint Antoine Bridge
Dufour acted as state engineer from 1817, although he was not officially appointed as such until 1828. His work included rebuilding a pumping station, quays and bridges, and he arranged the first steam boat on Lake Geneva as well as the introduction of gas streetlights.[1]
The scientist Marc-Auguste Pictet had visited Marc Seguin's temporary wire-cable simple suspension bridge at Annonay in 1822, the first wire-cable bridge in the world, and published details in Switzerland. He joined with others to promote a new bridge across the Genevan fortifications, consulting with Seguin on how it might be built, receiving back a series of sketches. Dufour developed the design in late 1822, proposing a two-span suspension bridge using wire cables — this would become the first permanent wire cable suspension bridge in the world. The design used three cables on each side of an iron and timber bridge deck.[1] The cables stretched 131 feet between the towers, although the largest span was only 109 feet.[12]
The Dufourspitze (the highest mountain peak in Switzerland and second of Western Europe) in the Monte Rosa Massif is named after Dufour, to honour his cartographic achievements.[3]
References
^ abcdePeters, Tom F., "Transitions in Engineering: Guillaume Henri Dufour and the Early 19th Century Cable Suspension Bridges", Birkhauser, 1987, ISBN3-7643-1929-1
^Drewry, Charles Stewart, "A Memoir of Suspension Bridges", 1832, online at [1]
^One reads: "Zum Falke: Geburstshaus des berühmten Schweizer Generals Wilhelm Heinrich Dufour (1787–1875). Ermals erwähnt 1428, Im 16. Jh. umgebaut", the other: "Geburtsstätte des Eidgenöss. General Wilh. Heinr. Dufour Geb. den 15. Sept 1787 Gest. in Contamines bei Genf den 14. Juli 1873"
^It includes the text "G.H. Dufour vécut ici de 1826 à 1845"
^The plaque reads "Le château de Montrottier a appartenu à la famille de Guillaume Henri Dufour (15.09.1787-14.07.1875) Capitain du génie sous le 1er Empire, Général pacificateur de la Suisse durant la guerre civile du Sonderbund, cartographe, mathématicien, ingénieur cantonal, cofondateur et 1er Présiduent du Comité international de la Croix-Rouge. Sa famille est copropriétaire du château de Montrottier entre 1799 et 1821 puis unique propriétaire jusqu'à sa vente en 1839 au Baron Jules de Rochette. Plaque apposée à l'initiative de "l'Académie flormontane" et "Les Salons du Général Dufour" Le 30 juin 2012"
^Plaque reads: "En 1838 dans cet immeuble G.H. Dufour Quartier-Maitre Général installa le premier bureau topographique fédéral"
^Fondation pour la conservation de la Maison du Général Guillaume Henri Dufour