TOUSSARD, Louis (toos-sar), Chevalier de, French soldier, born in Burgundy in 1749; died in New Orleans, Louisiana, in 1821. He studied at the school of artillery of La Pere, and was a lieutenant when he resigned at the beginning of the war for independence and came to this country with Chevalier de Loyante through means that were furnished by Caron de Beaumarchais. In June, 1777, upon Silas Deane's recommendation, he received a lieutenant's commission and was attached to Washington's staff. Later he was aide-de-camp to General Lafayette, assisted in the battle of the Brandywine, and lost an arm during the retreat from Rhode Island in the autumn of 1778. Soon afterward he was brevetted lieutenant-colonel and awarded by congress a pension for life. He assisted in the capture of Yorktown in 1781, and fought in the south with Lafayette till the conclusion of peace. In 1784 he was made a knight of Saint Louis, a colonel in the French service, and appointed inspector of the artillery of the French West Indies. He was at Santo Domingo at the beginning of the troubles in 1790, and fought on the royalist side. In 1794 he fell into the hands of the negroes, but through the intervention of the United States consul was placed on board a vessel bound for New Orleans. He petitioned congress for his reinstatement in the army, which was granted, and in February, 1795, he was made major of the 2d artillery, being promoted its lieutenant-colonel early in 1800. The regiment was disbanded in January, 1802, and he retired to private life. In 1812-'15 he held the office of French consul at New Orleans. His works include "American Artillerist's Companion" (2 vols., Philadelphia, 1809; revised ed., 1821).