Dufour studied at the École Polytechnique in Paris.
An equestrian statue of Dufour by Alfred Lanz at Place Neuve, Geneva.
A drawing of Dufour.
Dufour was depicted on the 20 francs note of the 1956 series of Swiss banknotes (in circulation 1956-1980).
In 1814 Dufour was named the Grand Officer of the Legion of Honour for his work, repairing and fortifications at Lyons.
A bronze bust of General Dufour at the Army Training Center in Lucerne, Switzerland. Made by Fonderie Leuba.
A painting of Dufour commanding the Swiss army.
Committee of the Five: Louis Appia, Guillaume-Henri Dufour, Henry Dunant, Théodore Maunoir, and Gustave Moynier.
Dufour's father sent his son to school in Geneva, where he studied drawing, medicine and military engineering. Later he studied at the École Polytechnique in Paris and the École de Génie at Metz.
When Geneva was incorporated into the French territory, he served as a sublieutenant in the army of his new country. In 1813, he was in Napoleon’s army defending Corfu and had become a captain by the time of the fall of the Empire. In 1817 he returned to Switzerland and was appointed ingénieur cantonal. His work on fortification at Grenoble and his construction works in Geneva - which greatly improved the city - made him well-known. In 1818, he became the chief instructor of the military school that he had helped to establish at Thun.
When Geneva was reintegrated into Switzerland, Dufour joined the Swiss army. He was made a colonel in 1827. In 1831 he became chief of staff, and in 1833 he commanded a division that restored order in Basel. In the same year, he began his pioneer topographical survey of Switzerland (1842-1864).
He began his pioneering work in triangulation the same year in order to prepare topographical maps of the Confederation. The maps were later published in 1842-1864.
He was elected a general of the Swiss army in 1847, during the Sonderbund War, again in 1849 to preserve Swiss neutrality, in 1856 during the conflict with Prussia over Neuchâtel, and finally - for the fourth time - in 1859, when the French threatened to annex Savoy.
He was a conservative member of the federal assembly, and in 1864 presided over the Geneva international congress which drew up the rules for treatment of the wounded in wartime and resulted in the creation of the Red Cross.
On July 16, 1875, 60,000 persons participated at Dufour's burial at the Cimetière des Rois in Geneva.
In politics, Dufour belonged to the Moderate Party.
Presumably, Dufour never married.