Eduard Ladislas Kaunitz, baron von Holmberg
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Eduard Ladislas Kaunitz, baron von Holmberg (1778–1853) was an Austrian military officer, who joined the Argentine revolutionary forces after serving alongside José de San Martín and Carlos María de Alvear during the Napoleonic Wars. He was appointed to the North Army under Manuel Belgrano, and later founded the first sapper corps in the Argentine Army.
He married a cousin of Alvear; his son Eduardo Wenceslao also served as an officer under Juan Lavalle, and his grandson Eduardo Ladislao was one of the greatest figures in Argentine natural science.